Backspace in begining of contenteditable false wrong behaviour

[versusvirus]

Do you want to request a feature or report a bug?
Bug

What is the current behavior?
If I press backspace in begining of contenteditable false block, cursor moves to previous line, but contenteditable block doesn't move
If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via fiddle.tinymce.com or similar.
1.Insert contenteditable false block
2.Create empty line before it
3.Set cursor to begining of the block
4.Press backspace
What is the expected behavior?
Cursor moves to previous line and block moves also
Which versions of TinyMCE, and which browser / OS are affected by this issue? Did this work in previous versions of TinyMCE?
5.0+

[lnewson]

@versusvirus could you please include a fiddle or video showing how to reproduce the bug? As I was unable to reproduce it using Firefox or Chrome with TinyMCE 5.0.8:

[wonderbugtiny]

Closing due to inactivity. We will be happy to re-open this issue if you could provide the details requested above.