there's no "join game" button?

There should be a connect button under the player list. Big red button. I am not too sure why it doesn't show up for you.

The other images aren't showing up either on there. You could try uninstalling and reinstalling it.

i got the same problem,and also if you notice the scroll bar
is missing too.
Standalone 5.01

edit: actually it is there but you can't see it,i clicked connect and it appeared
but only as long as i would hold the click and hover above the connect button.
a quick workaround is double clicking the server you want to join or pressing enter
in your keyboard.

having the same error

just double click the server you want to join for now

fleshmon is right
D-Click works everyday why do you need a (joingame) bottun when you have double click

I can't enter on the game :/.

April fools?

just go in singleplayer /jo <room name>

Guys just a quick heads up for all of you. I was running into a lot of problems
with this update as well, and I figured out that it was the torishop causing a lot
of my issues. If you go into the currently broken torishop it glitches a lot of
other stuff with the game. You have to close your client and reopen it to fix
said issues. No idea if this is what was causing your problems, but if you went
into the torishop at any time your client was open then its possible thats what
was causing your glitches.

if i restart the client it does the same thing