As per the title I’ve had this happen twice now where while in game everything stops responding, I can’t open menus, talk to NPCs, turn in quests, and then I disconnect.
Upon relaunching the game my character list is gone, the background is black and all the buttons are greyed out save for the ‘change realm’ button. Switching into a different server seems to work.
I play on Frostmourne on the Oceanic Servers. Scanning and repairing my game install seems to work but it’s quite a laborious task to do so every time this happens.
What you’re describing sounds a lot like a loss of data traffic.
I know you’ve said scanning and repairing seems to work, but it’s more likely the discrepancy in time (e.g. it’s a lot later when you again reconnect) that’s helping.
I don’t think bug report is the right place for this. Darthwraith is right, however, that tech support should be helpful.
Having the same issue intermittently, not sure what causes it but seems to resolve itself eventually.
Update: Getting ‘error retrieving character list’ on Full oceanic realms, both frostmourne and thaurissan, barthilas currently at high and works fine there.