Ogre was stucked for 10minutes, then he despawned. It happened at 4th wave, right entrance.
I'm getting same result just now, havent despawned been going on for 20 mins waiting. same spot but in wave 3
Just happened to me today. Stuck in right lane, looked like it actually spawned in the aerial lane instead of the proper ground lane.
Didn't take 10 minutes, but roughly 5 to get him despawned, He got stuck in the center-northern entrance.
same thing for me, went afk came back still stuck had to leave the map.