HTML Block escapes & after a < inside the block

[FireEmerald]

Describe the bug
The gutenberg editor sometimes escapes the char & > & inside a html block.
This entirely breaks the usage of the wp:html block.

To reproduce
I don't know exactly how to reproduce. But it seems like the < comparator breaks it.
Could have to do something with your detection of the <!-- wp:html --> ?

Expected behavior
The & should not be escaped as shown in row 174.

Screenshots
Backend editor:

Produced frontend code:

Every & below line 174 is escaped - it's irrelevant where i place it:

If i place a > directly after <, the & is not escaped anymore:

Just for fun i placed inside a comment a > and it's working (as workaround):

Desktop (please complete the following information):

• OS: Windows
• Browser Chrome
• Version 79.0.3945.88

Additional context

• Gutenberg: WordPress 5.3.2
• This issue was already reported and closed in Scripts in HTML Block #14293 but it's still present or again(?).

[skorasaurus]

Hi,

Thanks for reporting; there's another issue that covers this - #26362 and has more discussion about this so I'm closing this to direct discussion to there.

Thank you very much for the images and detailed description; that is really helpful.