Fake map item by clearing filled_map from inventory

The bug

If you clear a filled map directly after creation, you'll have a fake filled map, that you can't drop or use for anything. If you open a chest, a crafting table or similar things the item will disappear.

How to reproduce

1. Place a repeating_command_block
2. Set the command to /clear @a minecraft:filled_map
3. Give yourself empty maps
4. Switch to Survival or Adventure mode (cannot be reproduced in Creative mode)
5. Hold right-click