I know how to work around this now when it occurs, but the first time it happened my eyes popped out of my head and rolled across the floor. If I am using chrome and reset my computer and open old tabs to re-enter the game room. Everything I've entered is gone. Oh horrors! Nightmare! I've found, gratefully, that it's all still there. I have to exit the game, Then use "Launch game" to get back in. It's there, all is right in the world. This happens to me often enough because I live in China and cannot access the game room without use of a VPN and VPNs tend to get fickle and glitchy and not connect if I'm on for a long while. After 5-6 times or so, there's no panic anymore, I know how to get around that, but still it seems to me that I should either be able get in there directly and have no issues or else be blocked from entry and forced to click the launch game button to get in. The way it is now is change-your-underpants time for rookie GMs.