I've reported this problem multiple times. It happens far too frequently to be an inadvertent bug and is punishing to those of us who play certain decks. In 26 games I was on the draw 18 times. This isn't the first time this happened and is a nasty and cheesy way for MTG to fix its meta problems.

At this time, Arena is unusable to me due to this nasty problem. I keep trying to come back and hope that you've decided that such a nasty cheat is so obvious and so many people have complained about it that you've fixed it. Obviously that isn't the case.

If this happened once or twice, one might hand wave it away as randomness. It happens waaaay to often for that as I've reported previously.