Description

Primarily, a snack bar appears in the lower left corner when you perform some action on the block editor. This snack bar is fixed at the lower left corner, even if you scroll the canvas.

However, if the main content is scrollable on the following pages, this snack bar will also be affected by scrolling.

Step-by-step reproduction instructions

N/A

Screenshots, screen recording, code snippet

Environment info

No response

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

Yes

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

Yes