Players are logging off while at one location, but when they re-login their character is not where it was when they log off.
Has happened to me as well. Was in the rest area in Astranaar, went to log back in and was at the Flight master at Astranaar instead.
When this happens, the rest state does not properly shutdown. Have to go back into the rest area then leave before it shuts down the rest state. In other words, I can run all over the place, go into combat and finish, and still be gaining rest state.
Edit:
Forgot to add rev of core…sry.
TrinityCore rev. 41982aa30026 2018-08-12 14:17:26 +0200 (3.3.5 branch) (Win64, RelWithDebInfo, Static) (worldserver-daemon)