It happened only since 0.7.2 so I suppose it was introduced in that update but I may be wrong.
When I get to the omega warhead's elevator, the door is already closed and as I push the button, the text "It seems to be locked" appears on the screen as expected but I also hear the elevator noise and the screen shake as if you are inside and when I hear the door open the screen basically go black like you teleported or something. There is literally nothing to do to get the black screen gone, the only way I found was teleporting though the console. When the screen goes black you can still walk and hear your footsteps and the S-Nav says that you didn't leave the room. I attemped to stand right next to a button but upon getting the black screen, you can't push it anymore. I've yet only seen it on the omega warhead's elevator but maybe it can happen with other elevators too.
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Here's the link to download the save I got the screenshots from. It's on 0.7.3 and sorry but you'll have to install the clipboard mod.I also would like to report a minor bug that may be linked to this one.
Since 0.7.2, there are like 90% of the doors that are opened for no reason. I know before the update it happened but not as much as now and the bug is that sometimes even the door in the sort of testroom where you find the level 2 keycard and the S-Nav containing SCP-173 which breaks latter it's windows is opened.
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UPDATE: Still in 0.7.4..