fix(ui): use async selection in search edit

The smart selection logic implemented for #1033, for some reason
did not work for Ctrl+K. Calling selectAll() asynchronously
fixes that.

Related to #703.

src/libs/ui/widgets/searchedit.cpp

@@ -29,6 +29,7 @@
 #include <QKeyEvent>
 #include <QLabel>
 #include <QStyle>
+#include <QTimer>
 
 using namespace Zeal;
 using namespace Zeal::WidgetUi;
@@ -82,7 +83,8 @@ void SearchEdit::selectQuery()
         return;
     }
 
-    selectAll();
+    // Avoid some race condition which breaks Ctrl+K shortcut.
+    QTimer::singleShot(0, this, &QLineEdit::selectAll);
 }
 
 bool SearchEdit::event(QEvent *event)