Before 25w34a, paintings and item frames with maps could share a corner. Due to the fix of MC-36783, this is no longer the case.
To reproduce
Build a corner
Place a painting on one side of the corner
Place an item frame in the other side
Put a filled map in the item frame
Expected behavior
Nothing should happen, now I have a fancy corner!
Actual behavior
After about a second, either the painting or the item frame breaks.
Can confirm this behavior.