There is a client issue atm, new client version will be out in the morning
You can do this by hand to fix it for now in game settings:
- Enable Escape key
- enable shift key to drop
- hide roofs
EDIT:
Update is live, restart your client
Ya I'm aware, found the exact issue just now
Khal wintertodt updated to V4.02:
- Fixed issue where it did not drink any rejuvenation potions
Will be live soon!