Uncontrolled province after death of last ruler
I think a found a nasty bug.
After one of my vassal died, his land stayed 'barren', with no new lord. I didn't get the title back, nor got the province as another home domain.
When I click on it, the province 'shield' is empty except for France flag on the above. I can't see the army, the buildings, etc...
Checking the save-game, I found it out : province 131 ("Sens")
The title C131 was 'vacant' : it had an 'end-date'
Noone got the title C131 and province 131 was on no other land.
I corrected the problem by grabing C131 title for myself and adding province 131 to my home domains...
Still it's sad that when the last inheritor of a domain dies, the land just turns non-fonctionnal...