There has many funky things with props in the recent version(s) of promod.
1. Some windows aren't breakable by infected and I feel like they used to be. (beginning safe room area Hard Rain map 2).
2. Event doors are breakable, allowing survivors to bypass events
- Dead Center Map 3
- Arena of the Dead 2 Map 1
- No Mercy Map 3
(probably more)
I have a feeling that this stuff started happening around the time physics props were set to static during readyup. I have a feeling there is a a global find/replace going on that is messing with doors, windows, other various props that is making them act unexpectedly.
It could be all in my head though. ... Windows aren't actually props so I don't know what the deal is there.