I’m having the same issue with tab visibility and I have not tried the new glide builder…still on the old.
I came here to research the problem and saw this was just rolled out and thought I’d check here first, and waddya know.
It looks like it’s showing the top tab even if it doesn’t match the visibility conditions (although, interestingly, it correctly does NOT appear in the tab bar). This caused a major issue on one of my apps but I was able to quickly add a landing page top put at the top to stop it from showing. It’s still not working like it was before (IE showing the highest tab based on the proper visibility settings), but at least once the user presses one of the tab buttons that temporary landing page disappears and is no longer accessible by the user.
Pretty significant bug that seems to apply universally. I hope it gets fixed quickly.