The bug is reproducible for me whenever I have any effect that causes me to select cards from my library, whether with manifest dread, landcycling, searching for a card, whatever. When this happens, I cannot select the card. It's as if the game is stuck on "view battlefied" when the card selection process is happening, except there's no button in the top right to go back to the selection, and the game is not frozen. I can emote, click the library, look at cards, etc. The library when clicked shows that it is currently being searched with whatever relevant cards being revealed, but I cannot select them as the usual selection "window" to do so is hidden from me. Because of this, I'll burn the rope until my turn ends. After that, I can continue to play normally until another selection process occurs.
I'm on the PC Arena client. I have tried restarting it to no avail. It first happened to me in the midweek magic jumpstart event. I then tested it with the starter deck duels. Same thing.
I want to play limited but I can't until this gets resolved.