Hello,
From our side, it looks ok with flags where it needs
But you may check the option you see on the screenshot -> https://prnt.sc/iZFXhU48YRa- (Theme Options -> Speed Optimization -> Disable Emoji (turn switcher off)
P.S. For now we disabled it, so you may check from your side if the flags are shown there. Otherwise, if they are not shown, please, describe
1/ what operating system you are using
2/ your browser + version
3/ Is the issue shown from the devices of your friends/team ?
Regards