I’m finding it necessary to do a Browser refresh when switching users (in preview as) when the users have different visibility conditions configured. After the refresh, everything works properly — tab visibility, filtering conditions, etc.
Same same… been getting this sort of behaviour for several days in a new app I’m building. Every now and then the frustration gets the better of me, so I delete everything from my User Profiles sheet and start afresh.
This is an issue we are aware of but affect the Glide builder and not the live apps. The fix for this is being worked on but is combined with other changes to how Preview works in the builder so it’s not a quick fix. It is a high priority and should be deployed in a few weeks. Sorry for the inconvenience, we will get it fixed.