I deleted the world I was currently active in and afterwards I couldn't switch to any of my remaining worlds via top menu. The page greyed ouit and an animated white WA logo appeared for a few seconds but afterwards I was back where I came from (still in my deleted world with no sidebar menu.) My friend who I invited to the project who didn't even HAVE a world and only got invited by me has the same bug, where nothing happens after the attempt to switch, except for the animated logo.   I found a workaround where I went through my profile page and owned worlds. THERE when I pressed switch world, that worked, although I do have to mention that my profile is only listing One owned world, despite me owning two, which is also weird.

Steps to Reproduce

Delete your active world / Don't even own one Try to switch to another world you have access to via top menu, while having no world/deleted world active.

Operating System

Browser