The same occurs for myself as well. I'm running the latest version on the GitHub. I've disabled all the plugins and it still occurs. However, on this forum, it seems to work fine.. interesting.
My console reads this:
WebSocket connection to 'wss://community.*.net/socket.io/?EIO=3&transport=websocket&sid=NQaX7qjgJhYbzRiiAAAT' failed: Error during WebSocket handshake: Unexpected response code: 400
Thanks for the support guys.
@SgtBurden No good reason and I havent used Robomongo in a while. I just remember it being very confusing. Mongochef is similar enough to a mysql client not to freak me out I did the query that way because I was just trying things out - your way makes more sense in this context