Menu icon is not hidden after collapsing an heading in the editor

[Israel002]

This issue is related to the issue i opened about a month ago: #558 you fixed it, but then I commented that there was another way to reproduce the issue but since then, seems like you forgot to fix it or maybe you didn't get the notification. Anyway, so I decided to open a new issue to call your attention to it. Please can you fix it?

The environment im using is the same as the one I used in the issue I referenced except that this library version is now updated to the latest one: 11.18.12

Steps to reproduce the issue:

1. Insert any heading
2. Collapse the heading
3. Press Enter
4. Press Backspace
5. See error

Thanks in advance ❤️