When using commands to obtain an locked item that cannot be dropped or moved in the inventory, the game still allows you to place it in an item frame, which completely defeats the purpose.

Steps to Reproduce:

1. Open Chat
2. Use the following command: /replaceitem entity @s slot.hotbar 0 apple 1 0 {"item_lock": {"mode": "lock_in_slot"}}
3. Place the item inside an item frame.

Observed Results:
The item will be placed in the item frame, removing it from the player's inventory.

Expected Results:
The item should never be able to exit the player's inventory unless done through commands or consuming it if possible.

This bug could be very game-breaking for map makers, so I hope this can be fixed soon.