Hello. There is a regression in this week train, maybe library late load. From the moment of yesterday deployment there are some weird things with css.
I'm on Lollipop OS in Vector in hewiki. Some more users see this too, on Chrome, Windows 10. Others do not.
# Open some non watched (watched) page.
# Click on watchlist empty (blue) star
# Expected result: The page is added to (removed from) your watchlist. The star becomes blue (empty).
# Actual result: The page is added to (removed from) your watchlist. The star completely disappears.
The problem remains in safemode.
It exists also in cawiki, and in meta, but not in ruwiki or enwiki, which deployment will be in the evening.
Looks like something was broken, but not all were affected. My guess, from the stories of other users, that some collapsing library is loaded too late, but I'm not sure that this is the problem indeed.