[Lammy]

> I think you could get them stuck halfway closed by cramming something in the door frame that would get the whole thing jammed.

This was a popular griefing tactic when TF2 first came out where you could trap everyone in spawn by crouch-jumping into the spawn door as Scout: https://youtu.be/JUPzN7tp7bQ?t=243

[sigmoid10]

Yeah this seems to be exactly the same issue that Valve eventually discovered in the Mastodon thread linked by OP.