Inserter stays fixed on the screen when scrolling

[simison]

Description

When scrolling on the page and I hover to reveal an inserter, the inserter becomes fixed while I would expect it to scroll with the rest of the content.

It just feels jumpy when it doesn't stick to the place:

Screen.Recording.2021-11-25.at.19.15.36.mov

Screen.Recording.2021-11-25.at.19.34.18.mov

FYI @jasmussen perhaps this started after making the appender fixed in #36605 ?

Step-by-step reproduction instructions

• Go to site editor
• Reveal inserter by mouse hover and scroll with mouse scroll wheel

Screenshots, screen recording, code snippet

No response

Environment info

• Gutenberg v12.0.1
• Firefox 94 MacOS

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

No

[jasmussen]

Thanks for the ping and the report. It is to an extent the same issue as #35536, which is crucially important for us to fix, and in the 5.9 list. The good news is, @ramonjd created a PR today that in my latest testing appears to fix this really well.

[simison]

@ramonjd is this fixed and can be closed?

[ramonjd]

is this fixed and can be closed?

Thanks for the ping. Yes, will close 🎉