I remember Komodo said to check the browser console for errors if this happens. I was hoping this would happen to me and it finally did, but ironically it's only happening on mobile, and there's no easy way to check a page for errors on mobile. _(:τ」∠)_

Anyway, my info: using the latest version of Chrome on Android, the only thing I was doing before it happened was checking the forums. Then I opened my inventory with the intention of sending an item to someone, and suddenly buttons no workie. Tried clearing cache and cookies to no avail. Only on mobile though; my inventory is working fine on desktop (so far).

Edit: Switched to Firefox on mobile, same issue there.