From 54fd8bede1567a5210db8f4c4c5db0d3f54b4c58 Mon Sep 17 00:00:00 2001
From: Jason Chen <jhchen7@gmail.com>
Date: Mon, 20 Aug 2018 16:09:45 -0700
Subject: [PATCH] fix selection loss when checking/unchecking list

---
 formats/list.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/formats/list.js b/formats/list.js
index e0172f10af..ca2f2f2945 100644
--- a/formats/list.js
+++ b/formats/list.js
@@ -24,13 +24,15 @@ class ListItem extends Block {
   constructor(scroll, domNode) {
     super(scroll, domNode);
     const ui = domNode.ownerDocument.createElement('span');
-    const listEventHandler = () => {
+    const listEventHandler = e => {
       if (!scroll.isEnabled()) return;
       const format = this.statics.formats(domNode, scroll);
       if (format === 'checked') {
         this.format('list', 'unchecked');
+        e.preventDefault();
       } else if (format === 'unchecked') {
         this.format('list', 'checked');
+        e.preventDefault();
       }
     };
     ui.addEventListener('mousedown', listEventHandler);