enemies can open key doors and keep them open with their body

[Tapio Palomäki]

kinda funny but enemies can open a key logic door and be shot on the door keeping it open.

in other words player can alert the guards on the other side of key door which will be opened by them, without the key being picked up yet etc.

[Braden Obrzut]

This is vanilla behavior. In fact, episode 4 floor 7 even seems to be designed around it as the intended path. Speed running also exploits it for short cuts.