For context, I recently added a new feature service for a work flow, similar to how we have in the past. In the Data visualization tab, the UI has changed but I set up the symbology and pop-up the same as previously. It's a group feature service (3 layers within), two of the layers do not have a pop-up, one does. I configured the pop-up as before (copy and pasted from the previous web map). I made sure to set the other two to not enabled. To configure which fields were editable, I went to the Data Tab/Fields to do this (though I wasn't able to configure all fields I wanted to be locked down as uneditable, though that's another story, def not as easy as it was before).
I then opened the feature service in Map Viewer, set my book marks, checked that the two polygon layers were not 'clickable' or had a pop-up showing up. I then removed all 3 layers from the grouping and deleted the group as having a group layer caused issues in the past. Still all good, the one point layer with a pop-up was working, the other two didn't show in the web map.
I set up the offline areas, opened it in Field Maps and it shows all items, pop-ups for all 3 layers. I tried to set it up again leaving the grouping, same problem occurred. I tried setting up a new map using Map Viewer Classic, same problem. I tried Collector, same problem. I tried not making offline areas, same problem. I'm starting to think it may be an issue with the new Data visualization set up? My maps that I made (even just a few months ago) in the same way for the same work flow all work fine and as expected (and still do) in Field Maps.
Any ideas of something else to try?