This bug is very rare, and I am assuming has some connection to the doors being changed past their spawn configuration and that information not being correctly sent to the client. Desync or lag may very well be a factor. I am also guessing this bug also affects doors that spawn open, but as this bug is very rare, and most doors spawn closed, this bug will be much more noticeable when open doors appear closed.
This bug does not appear to extend to doors that are opened (and likely closed) in the client's vicinity.