The PPSH has no firing sound, either normal or upgraded

Looking out the rightmost window of the PaP room causes certain background elements to disappear, in varying amounts in different spots. I checked with Order Independent Transparency both off and on.
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2062853887
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2062853956

Friend and I just tried the map today and found out that if you jump from above the knife towards the blue cart or boxes you can bounce around and lodge yourself inbetween the roof of the cart and the series of boxes and are untouchable by zombies. It also confuses Brutes's AI causing him to stand still if he is chasing that player.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2164160785

I'm aware the original mod maker is no longer making changes, but I'd like to just point these out if anyone wants to give it a remaster because it's definitely a good building block:

<Playing with bots using the all around improvement mod>
One of the bots got stuck behind the Mule Kick machine.
A zombie got stuck in the barrier at the back of the room in the stables.
Sometimes teleporting to the pack a punch machine left me in a black box and I had to wait to teleport back (no issues with teleporting back so far).

Round 25 onwards (on the main mod page I've seen people say round 23), I've had the brute zombies spawning non-stop, luckily I had a shotgun that took about 8 shots to kill them, but they're almost continuous (when I went to pack-a-punch I came back to 4 of them).

Could do with a gobblegum machine.