FPS tank/memory leak in Railjack when Titania enters a derelict. At least one player reports seeing Titania switch to pixie mode and back, and Titania reports weapons switching every frame.
I don't know whether Titania was using her 4th ability before or after Archwing mode, or at all. One player reported progressing in a quest while on the derelict, though that doesn't seem related.
As host, my FPS went from 60 to ~15, then gradually down to 7. RAM usage was normal until close to the end of that time, then peaked above 3GB (I normally see ~2-2.1 in Railjack). Other players also reported very low FPS during this time, and the Titania player was for a while unable to exit the derelict.
Edit: Log file submitted, ticket ID #2012686