got the same thing happening
that once a while it chooses 5v5 instead of dominion
its something that can be improved by checking if the game is dominion or not
if not then redo create game
for the rest it works fine for me
its not stuck anymore for me
might help if you turn off newbie tips in the options
anyways i'm waiting for Valen to update and i know it takes a while locating the problem

programming is annoying sometimes xD