@ronentk.me didn't see a bug report button in the Semble UX, but I encountered two just now. First, it didn't detect an expired token until I attempted to create my card, booting me to a login screen and losing my progress. Second, it did this (android firefox).
Clicked this link hoping for a bunch of pictures of crazy ceramics; was disappointed. To fix this, I have created the new @semble.so collection 'Crazy Ceramics' semble.so/profile/7hir..., beginning with our lord and savior, Cockerel Vessel 24.97.21a, b. It's open, add some cool ceramics!