Have had that sort of thing happen to me.
Annoying in-game Glitch!
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When using a touch screen, I have had similar things happen (the menu pop out, etc)
Aug 6, 2018
0
#4
Oh, we are really sorry for this! Could you please submit a bug-report and include as much details as you can (device, browser, os...). Thank you so much 
I was playing a bullet game, and I was up on time. My opponent was obviously going to lose on time, as long as something crazy didn't happen. Suddenly, my mini box of stats ( the one that pops up when you click your username during a game), popped up, blocking the screen!!! My clock started running, so I was aware that my opponent had moved. I am sure that I in no way touched my username, or anywhere else besides the board and pieces. I ended up losing about 20 seconds of my time on one move, had to refresh the page, and ended up losing on time. It was a rated game, and my opponent did not accept a rematch. Very frustrating!!!