This collapsing of hashtags at the end of posts in the latest masto update is going to drive me up the wall, I'm certain.
I've barely come across any posts so far that this actually saves space on, either because the final hashtag is shorter than "and X more" or because the line has already wrapped by that point anyway.
This is the sort of #UX cock-up I see far too often from dedicated designers, let alone coders who aren't thinking when they implement it.