similar report
MatchID 51934507 our bebop got stuck below map after a lash ground slam, we tried several tricks to get them back, no dice. Unstick didn't work. Eventually they managed to get into the tiny tunnels but there's no way out of there for a bebop either
i assume this isn't the only duplicate but thread with some videos here:
https://forums.playdeadlock.com/threads/drifter-can-get-himself-stuck-in-the-new-tiny-tunnels-using-stalkers-mark.98376/
this has happened to me several times since the most recent major patch - i press ult in response to hearing wraith ult, I ult on my screen, but then i get yanked out by wraith ult and shadow-calico is stuck on my screen until next time I ult.
in general the game feels... laggier? not FPS wise...