Yeah, it's happening to me on mobile and some other people too. At least one staff member is aware.
Errm Glitch?
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I am having the exact same issue but only on the new chess.com. The old one works just fine.
look at the stats 
Yes same thing happening to me
It is happening all over V3 I just checked V2 and none of the greek symbols are in V2 ??
Yes, v3.
In the past, if the page loaded slowly, you could see those as placeholders before the script that replaces them with icons loads.
Seems to be fixed.
My icon are all a Greek or random characters like "τ", "Θ", "ß", "Ö", etc
any information on why this is happening and how to stop it?
thx