1st time - Nodes of Power: Had just finished a match where I won and game was unable to get to the award screen. Kept showing “Something went wrong. Retry/Quit”. Retry failed. Ended up counting as a loss, instead.
2nd Time - Nodes of Power: Battle with Chandra vs. Gideon; Completed a round and the game stopped. My only option was to quit, so I lost the round and took damage.
I didn’t notice this much annoyance from the last maintenance but maybe it’s just me? 