Had a similar problem, on battle of khylo.
Just before the match ended, i got a countdown to be redirected to lobby. Upon being sent to the lobby, i got the match ready notification, but clicking join match didn’t send me, and the [go now] button in the pvp menu didn’t work either. Match begins in.. ticker got to 0 and stayed there until cancelled, pvp menu continued to behave the same.
When I logged in and out, it brought me to the map and the the (new) game ended and everything seemed to function normally.