I think this was fixed in the build 24 release, but it kind of makes the map really unbalanced/annoying with old builds. I might be able to work around that one at least.
Axe backwards compatibility maybe?
The bouncing up and down on spawn is actually a code bug, not a problem with the map. I've fixed this for the next release. I didn't even realize it was there until I tried playing the map on an older server.
I've tested the map with the b24 pretest. So i think it wasn't an old (home)server.