After importing a world built in 0.16 and last played in 1.1.4, Filled Maps I had stored in a chest could not be removed from the chest nor moved to another slot.
When I tried to move one, the icon was dragged by the cursor but didn't disappear from the slot. When I attempted to drop it in another slot, either in the chest or in my inventory, the cursor icon disappeared and it appeared to remain in the original slot.
Breaking the chest dropped the maps, after which they appeared normal again.
The problem occurs in both Creative and Survival mode. It does not seem to occur for new maps created after upgrading the world.