It seems that there are issues cropping up when artillery is used with double blind the following was repeated a lot in the error log (the other player was able to reconnect with no issues after but they disconnected between rounds each time):
player Morges 1st Cavalry on turn: 2 Special type: ARTILLERY_INCOMING drawing: true details: Artillery Incoming. on round 2 from player Morges 1st Cavalry
player Morges 1st Cavalry on turn: -99 Special type: ARTILLERY_AUTOHIT drawing: true details: ArtyAutoHit Hex, for Morges 1st Cavalry
Error: Attempting to filter a Report object that is not public yet has no subject.