[CLIENT] I cannot go into a lobby

When I play any other game mode than team builder, after I press accept I do not go into the lobby, but rather in the main screen of the client. Other people have told me that I AM in the lobby, and I cannot start another game. If I wait, i get the timer penalty, same happens when I relaunch the client. Have tried re-installing the client but does not work.

1. Start any matchmade game that isn't team builder
2. Press accept
3. Now there's a chance you will not be in the lobby. This bug does not occur every game, but I am afraid it will happen, so I cannot play anything else than team builder.