First off, love the map design with its spacious look, and how large it feels without seeming too big to make it to traders in between waves. Nice work in that regard.
That said, there are significant issues with the Bloats and Scrakes in parts of the map. And this wasn't just me, but everybody else playing with me on the team. Everywhere except the top level area around the subway station, Bloat heads and sometimes also Scrake arms would glitch out and go all over the place. You can't target them when this happens (which is a huge pain with Bloats whom you need to kill with body-shots because of it) and when they die, their corpses fly to the ceiling. For some reason, this wasn't happening in the top level. (Once we realized that it was fine up there, we camped that spot.)
And I see you've already noted the glitch with Dosh and dropped items disappearing. For some reason, you can give people Dosh if you're really close up to them so there's no flying animation, then they get it. Same for throwing weapons to someone. Other times it will fly as normal and then just vanish without either hitting the ground or the person a couple of steps in front of you.