Casting “Dance of the Tumbleweeds” with the +1 CMC clause to “Search library for a basic land or desert card…” and then targeting the “Mirage Mesa” desert card causes the MTGA client to timeout / add a spinning circle in middle of screen, with no interaction possible. After some time (or after rebooting MTGA), the game resumes however the “Mirage Mesa” is not put into the battlefield as it should. Instead, it is left in the library.