Vanish from Sight
I encountered a substantial bug today which contributed to me losing the game and the Arena Direct run as a result. The bug happened after my opponent cast Vanish from Sight on my Watchdog. I was supposed to be able to choose if the card goes on the top or bottom of my deck, but neither of the two options worked. The card was stuck to my cursor, and I couldn't place it down to the top or bottom of the deck side of the window. I also couldn't click the View battlefield or Done buttons. As my timer ran out, the Watchdog went to the bottom of the deck (which is not what I wanted) and the turn instantly ended.

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TheWamp#17907 commented
You should get reimbursed or something. email customer service. Did you get a file log?