diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
index 6778432599b50..ec1ca99d0c33d 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
@@ -7438,6 +7438,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
index e4d80de96e411..6def5c153fe7b 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
@@ -7438,6 +7438,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
index 2fcfbb4ff68c3..ab7c954d196d9 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
index 9f37886c4430c..8ef26a337fe91 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt b/compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt
new file mode 100644
index 0000000000000..0c5e32ec57413
--- /dev/null
+++ b/compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt
@@ -0,0 +1,26 @@
+// IGNORE_BACKEND_K2: JVM_IR
+// ISSUE: KT-70417
+
+interface A {
+    var x: String
+}
+
+open class B : A {
+    override lateinit var x: String
+}
+
+interface C: A
+
+open class D : C  {
+    override var x: String
+        get() = "OK"
+        set(_) {}
+}
+
+class E : B(), C by D()
+
+fun box(): String {
+    val e = E()
+    e.x = "Fail"
+    return e.x
+}
\ No newline at end of file
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/JvmAbiConsistencyTestBoxGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/JvmAbiConsistencyTestBoxGenerated.java
index 652024cc00fa7..3b9ce341b262a 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/JvmAbiConsistencyTestBoxGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/JvmAbiConsistencyTestBoxGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
index 2ac36c1166a7b..0db0eac7d0efa 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
@@ -7061,6 +7061,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
index f6a110dc2f3ec..c8318caa2f9ee 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
index d8a6433f4d59b..c7e4d1f7ace33 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/inlineScopes/FirBlackBoxCodegenTestWithInlineScopesGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/inlineScopes/FirBlackBoxCodegenTestWithInlineScopesGenerated.java
index 4b4a690a4331d..bec607d64c7c6 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/inlineScopes/FirBlackBoxCodegenTestWithInlineScopesGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/inlineScopes/FirBlackBoxCodegenTestWithInlineScopesGenerated.java
@@ -7373,6 +7373,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index f30bed272a6c1..e725a712c4e72 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -6424,6 +6424,11 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @TestMetadata("method.kt")
     public void testMethod() {
       runTest("compiler/testData/codegen/box/classDelegation/method.kt");
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
index 48eee909aa58c..f854860154463 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
@@ -5651,6 +5651,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
index 23a5e9e00c5da..d3746848da931 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
@@ -5651,6 +5651,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
index fa29615edbc7d..913be13b579d0 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
@@ -5651,6 +5651,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
index b56ff4e8acb95..4327ddce405bf 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
@@ -5651,6 +5651,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
index 6153f631c518c..a1586a50363ba 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
@@ -5827,6 +5827,12 @@ public void testGeneric() {
         runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
       }
 
+      @Test
+      @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+      public void testHiddenDelegateAndLateinitVar() {
+        runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("method.kt")
       public void testMethod() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
index 6984892f00aff..c219833682a4f 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
@@ -5947,6 +5947,12 @@ public void testGeneric() {
         runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
       }
 
+      @Test
+      @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+      public void testHiddenDelegateAndLateinitVar() {
+        runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("method.kt")
       public void testMethod() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestGenerated.java
index 87c6ac9a8a161..aedf82a00682b 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestGenerated.java
@@ -5707,6 +5707,12 @@ public void testGeneric() {
         runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
       }
 
+      @Test
+      @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+      public void testHiddenDelegateAndLateinitVar() {
+        runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("method.kt")
       public void testMethod() {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestNoPLGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestNoPLGenerated.java
index b272376026db9..522740f9450ec 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestNoPLGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/NativeCodegenBoxTestNoPLGenerated.java
@@ -5828,6 +5828,12 @@ public void testGeneric() {
         runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
       }
 
+      @Test
+      @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+      public void testHiddenDelegateAndLateinitVar() {
+        runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+      }
+
       @Test
       @TestMetadata("method.kt")
       public void testMethod() {
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmJsCodegenBoxTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmJsCodegenBoxTestGenerated.java
index b0a8e4a9da048..c11a1c19aeee5 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmJsCodegenBoxTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmJsCodegenBoxTestGenerated.java
@@ -5633,6 +5633,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenBoxTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenBoxTestGenerated.java
index b9bbbda705303..683eb4c9b38d5 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenBoxTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/K1WasmCodegenBoxTestGenerated.java
@@ -5633,6 +5633,12 @@ public void testGeneric() {
       runTest("compiler/testData/codegen/box/classDelegation/generic.kt");
     }
 
+    @Test
+    @TestMetadata("hiddenDelegateAndLateinitVar.kt")
+    public void testHiddenDelegateAndLateinitVar() {
+      runTest("compiler/testData/codegen/box/classDelegation/hiddenDelegateAndLateinitVar.kt");
+    }
+
     @Test
     @TestMetadata("method.kt")
     public void testMethod() {