I just had the exact same thing happen.
iOS 8.3
iPad Air
Quest Mode - Normal
Neither Pass and play nor permadeath on.
Kyra and Amiri
Amiri unlocked a card, Kyra unlocked a blessing. Amiri's goes through fine, but when the reveal is done for Kyra, it hovers above the screen, just like the OP.
I can't do quest mode anymore. If I close entirely out of the app, and even rebooted the iPad, every time I tap continue or quest mode, it returns to the victory screen, and repeats the process over again.
Also, this may not have anything to do with it (but more data the better), but the first time I got the victory screen, I wasn't credited with the 100 gold. On the reboots following, the gold was credited. During the quest, my WiFi connection failed twice, so I got the gold purchase message twice.
