@Marius, please don’t apologise!
I really appreciate your feedback (as does the team and I think the community) and always consider your suggestions and remarks as I know they have been thought out by you.
In this particular case, your observations are once again correct and there is space for improvement. 1.2.1.4 should alleviate the issue with tabbing as we’re now moving all block elements near the end of the body tag.
The library (micromodal) we were using has indeed been removed, as we are now working with our own small logic that allows us much more flexibility and a compatible vision with how the builder works.
Accessibility and modals is a tricky combination, so we more than welcome any remarks/suggestions you might have.