This fixes an error with recent Gutenbergs, as well as adds a basic fix for the floating toolbar issue.
It also explicitly removes unwanted blocks. I'm not sure if something changed in Gutenberg, but the group option was still appearing as an option even if the group block wasn't allowed. Removing the block entirely fixes the problem.
Uses the isolated block editor in https://github.com/Automattic/isolated-block-editor/pull/230
This fixes an error with recent Gutenbergs, as well as adds a basic fix for the floating toolbar issue.
It also explicitly removes unwanted blocks. I'm not sure if something changed in Gutenberg, but the group option was still appearing as an option even if the group block wasn't allowed. Removing the block entirely fixes the problem.
Note the package reference will need updating once https://github.com/Automattic/isolated-block-editor/pull/230 is released.