image viewer counter is inconsistent

the new image viewer has a counter in the top left corner (e.g. "1 of 4").

In the same room when I click on the newest image in the timeline it displays "1 of 1" and doesn't let me swipe left/right.

When I go to uploads -> media it displays more images. When I open the first one it displays "1 of 10" and on all other images it displays nothing in the upper left corner.

Maybe it makes sense to only display the counter when you open it via uploads -> media in unencrypted rooms?

In unencrypted rooms it should imo never display the counter (as uploads -> media is only populated from cache in e2ee rooms and thus it'd be always wrong)