Ok I was also testing connectivity which now seems to be mildly better and more bearable now that you can curse the person you cannot connect to. However ahere are the following problems I discovered:

1. Connecting a second time will freeze the game:

Every time you try to connect and it fails... fair enough its Beta but then you try to join a second game, and the game freezes in many ways in my case:

a. There is an intermediate joining game window that overlays over the games

b. The game goes tot he NAT transferal window but it freezes on the normal Main screen background

2. Connecting to a Pasworded game and clicking Cancel:

If you press CANCEL when you find a pssworded game the game freezes as shown in the image below.

Image link

3. Connecting to a Passworded game and clicking OK with no/wrong password:

The Game goes tot he NAT transferal page that has a cancel button so you are able to cancel but if you find a SECOND game that has a password and you click OK then the game frezzes once you have pressed the button.