So here's the bug I've run into numerous times (3 I think). Today I have seen an interesting pattern of the bug, like a slow descend into disability. From my point of view there is like a cascade of bugs. First I've upgraded a Honeyflower and was unable to revert the upgrade (it just showed my towers list instead of the fighter menu). I reported the bug using -bug. I could normally upgrade another unit (there was a menu for that, and the game went on. Second, when I was sending, most of my send went normally, but I was not able to send the cannoneer with my last mythium. I thought this was a connection issue, but the game went on normally. I tried to report it, but was not able (chat didn't work anymore). When the wave ended I was unable to build anything at all or get workers. I could not write anything to chat (I could write, but when I pressed Enter the message didn't appear in the chat window). I tried to report that as well but with no success. When I tried to leave the game despite the warning, I got stuck in a "Leaving the game" screen, then I had to force shut down the game. I want to clarify that by "unable to do anything" I mean that the buttons of the UI are there, but neither hotkeys or pressing them with mouse causes any effect. I believe this bug is critical, so I'm posting it here. I looked through the other bugs but couldn't find this one anywhere. If it's already reported or not critical to the game, feel free to move it out of this section.