I've been having this problem for weeks now, it's really annoying, only happens in Firefox. Flags look scuffed (as shown on picture), and when playing the game, pieces that me or my opponent took don't show up properly (usually can only see some part of said piece and the +x sign), you can also see it on the right side next to the time limit options. Firefox is set to 100% zoom, and I have to change it to 150% to make things look normal, but obviously it makes the screen too big and thus it becomes unplayable.
First thing to try is clearing your browser cache. Next, if that doesn't help, what version is your browser?
I've been having this problem for weeks now, it's really annoying, only happens in Firefox. Flags look scuffed (as shown on picture), and when playing the game, pieces that me or my opponent took don't show up properly (usually can only see some part of said piece and the +x sign), you can also see it on the right side next to the time limit options. Firefox is set to 100% zoom, and I have to change it to 150% to make things look normal, but obviously it makes the screen too big and thus it becomes unplayable.