Hard freeze from Domri vanguard's -2 ability [Couldn't Reproduce]

My opponent activated the -2 ability on their Domri, Anarch of Bolas vanguard. Our creatures dealt damage to each other and then the game froze as shown (no animations, unable to open any menu).
Creatures and supports in play:
- My creature: A 12/12 token stack produced by March of the Multitudes
- Their creature: A 9/9 token stack of Zombie Army tokens
- Their supports: Domri, Anarch of Bolas; Liliana, Dreadhorde General; and two treasure tokens
- Perma-supports: As per the RaW - Revelation event
Their hand was full when the freeze occurred.

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Comments
I waited for a minute to see if the freeze resolved itself. When it didn't, I switched apps and returned to the game after a few seconds. The screen went completely dark on my phone, forcing me to restart.
This caused my only lost points so far in this weekend's coalition event.
https://ibb.co/YQcZstB
Lost two battles in the Event. It's a coalizion event so i'm a bit sad.
https://forums.d3go.com/discussion/82948/pits-of-nightmares-freeze#latest
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Thank you,
Marcela.