Monster bug: Standing in a T pose doing nothing - Spoiler probably so beware

[Perelie]

I had a look round and it looks like no one else has had this problem, or at least reported it.

Basically, I got to the prison part and there are a few of these guys hanging around. They're like markers or something, they don't move or do anything, and they have no physical properties. They just stand in a T pose.



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I ignored it at first, but after I saw another one doing that in the morgue, I started to get annoyed. I mean, I don't want to miss and mess up stuff because of a stupid bug.

Any fixes?
Thanks

EDIT: I should point out, it's only that monster that does it, the first guy you see with the beak face, he works like normal every time.