[BUG] Error happens when delete block on backspace if prev block with custom editor

[Darginec05]

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Has this bug been raised before?

• [X] I have checked "open" AND "closed" issues and this is not a duplicate

Description

When the previous block has a custom editor (for example, Code plugin) and the user clicks on the backspace editor, then an error occurs in the editor

Steps to Reproduce

Click on backspace keyboard when prev block is Code plugin

Environment

prod

Screenshots

No response

Do you want to work on this issue?

Yes

If "yes" to above, please explain how you would technically implement this

No response