I'm having a strange bug in the Vision PVP.
I'm running Shang-Chi/Vision/Valkyrie.
Valk lvl 275
Shang, boosted to lvl 590
Vision boosted to lvl 381
I win my battle, and when I go to enter a new match, Valkyrie is replaced with Chavez.
This is happening again with the Colossus PVP (except valkyrie is being replaced by Thanos)
Game is telling you to stop cheesing your way through PVP.