Cant report this as a bug so am being forced to do it here. The battlefield appears and if I am going first, after I select mulligan or Keep the system doesn't register I have done this and I end up timing out. If the opponent goes first they end up timing out but without the game ending. I cannot even concede. This is the same on brawl or timeless.

I have tried repairing the game files - same issue appears.
I have uninstalled and reinstalled the game - same issue continues.
In a desperate attempt to resolve it I have logged out of my account and logged back in - same issue appears.