Deleting Content surrounded by Div's in gui leaves Div's behind

[kwfinken]

Type of report

Bug

Provide detailed reproduction steps (if any)

1. On a "full package" installation of CKEditor 4 (e.g. https://ckeditor.com/docs/ckeditor4/latest/examples/fullpreset.html), go to source mode and enter the following:

   <div class="test2">
   <div class="test">ad fsadfd asf dsafd</div>
   </div>

2. Return to GUI mode
3. select all text (ctrl-a)
4. press delete
5. go to source mode and see the result

Expected result

Because it was select all (ctrl-a) delete should remove every bit of code. Meaning source code should be empty.

Actual result

<div class="test2">
<div class="test">&nbsp;</div>
</div>

Other details

This only seems to happen when it is a div inside a div and both div's have assigned classes.

• Fails on Browser: Fails on Chrome (PC and MAC), Edge (PC), Brave (PC)
• Works as expected on Browser: Firefox (PC)

This causes unexpected outcomes for users as when they enter additional text into the editor, they are (unbeknownst to them) now working inside a div instead of on a blank canvas.

[Comandeer]

I can confirm the issue. It's probably connected with the upstream behavior of the browser and can be reproduced on native [contenteditable]. To actually delete the `div`, Backspace/Delete needs to be pressed twice.

However, the editor seems to have some custom handling of divs as it correctly removes the following content:

<div>
<div>Test</div>
</div>

The issue appears when some divs have classes. In that case, they are not removed.