What happens is: sometimes a character, usually the owner of a stronghold, will have a stronghold bugged after they die and respawn or log out and log in again near the stronghold. The stronghold will appear higher above ground for the bugged character. Now when the said character tries to enter the stronghold, it will appear normal to them (except that the stronghold itself will be higher), but for outside viewer they will float above the ground. The same bug will cause characters to be stuck under the stronghold floor if they logout/login inside the stronhold.
The video:
Stronghold from a bugged character POV:
Same stronghold for everyone else:
The video:
Stronghold from a bugged character POV:
Same stronghold for everyone else: