Bug that makes it really really hard to play

So basically, this bug makes half your opponents’ pieces disappear, as in non-visible, like blind fold. I have a picture.

I just played and didn't have problems...

Maybe just a glitch?

That's usually a browser issue. Try clearing your browser cache

Don't use the website on a mobile device. It will always lag. TRUST ME!!!!

Depends on your device and connectivity

See, it should be possible to play on mobile, so
As for the issue, I haven't personally had it (even when playing a game on mobile, which I always do via browser), but I think Martin is right to say just refresh the page.

Thank you!