Paintings are being broken in Adventure mode

Paintings are being broken even if the players are in Adventure mode. Sure we can use MCedit to give them an invulnerability tag, but its rather annoying to do this repeatedly every time we want to add new paintings to the map, and sort of breaks immersion when the player can break them but cannot place them back. Item frames, mob heads, and armor stand who share similar properties to paintings work as intended and do not break.