Spectator mode can throw item in every place, but can't take them

Pickup an item in any gamemode, put them in any slot (1 to 9) and change the gamemode to spectator.

Press Q to throw the item.

I know that spectator mode can't pickup items, but the problem isn't.

The problem is: spectator mode can throw items in pressure plates, for example.

I'll continue my bug searching now. Sorry for my english.