In treat as NES dungeon screens with locked doors, when you leave and return after unlocking it, you find it has locked itself back once again.
Quest stopper.
EDIT
In some cases my door sets are also doubling as lock blocks
could this be causing this?
anyone else have problems?
Yes, the lock blocks seem to be overriding both the locked doors and the boss doors. Try setting your locked and boss door combos to something else like 'No Flying Enemies'.
I just went through my quest and set all locked doors as lock blocks
no locked doors are used now from the door combo sets