You should not able to throw pyramids through doors or portals, those are bugs that has not been fixed.
Seriously?
I thought thats what theyre for. What use are they then?
I thought its because they are interdimensional. Pyramids. Possible made by aliens.
They can be used to bypass surfaces obstacles or to sneak away from enemy's by teleporting all your group to one location. You can do many things with it...
It's technically always was a bug as it could mean lock picking doors and portals are useless in the game. Portals meant to be open with the amulets and locked doors or locked areas and walls cannot be used with the pyramids.
Edit: If they are interdimensional they only should limit to portals or locked doors or magical locks, because lock picking and amulets will be kind of useless than.
