Vanishing Buttons

Started a fight against a Finn/Zorii team in GAC and there were no attack buttons. Auto made no difference. You can see the team makeups and the datacron I was using in these screenshots. This is a pretty reliable counter, so when it bugged out I had to grind through it - took five fights in total and I used up several key teams - so I lost the GAC matchup (and therefore missed out on a load of crystals). Reported in game but they eventually closed the ticket without offering any help.