I would not have registered for Larian's previous forum had I been able to find out by searching if it was normal in Divine Divinity for the healing/mana shrines to stop working after awhile in the council hall (apparently it is). I had a barrel filled with meat and so many potions saved up that I had to transfer some to a chest periodically to keep from becoming encumbered, but set up camp at the back of the council hall, and used the healing shrines (if required) when teleporting back to drop off loot, etc.