I have noticed that the countdown timer to the next tournament (in the header bar, top-right of the screen) does not always stop counting at 0:00, but instead will continue counting down, into negative numbers, after the tournament has started until I do a full reload of OGS. Just switching between “Home” or “Play” or “Games” doesn’t refresh this, but reloading the page entirely does.
I seem to notice it happening more when my computer is asleep, or the page is inactive when the tournament starts. I can confirm that the timer goes away as intended when the page is active and a tournament starts, but sometimes I open my browser and my OGS tab has a timer at -500 minutes!
Just wanted to make somebody aware of this in case it is a new bug.