Acknowledged, but very messy to correct. Won’t fix.
It will appear on the next wave.
No, disconnecting should always be allowed.
Changed in v.96 
Idea
BTW Anyone sophisticated enough to perform a DDOS can certainly do so even though the game doesn’t show the IP.
Fixed in v.96 Bug
I don’t know. Are you using “Force UDP port”? If so, try again with v.96.