Thanks -- so it is a matter of installed fonts, since my external version of Firefox showed them just fine. It makes sense that the in-game web browser (the web app is just a browser) is a stripped down version with a "universal font." (Which is to say one in which all the fancy stuff doesn't work.)
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Remembering Tyneetryk
Phaedreas Tears - 15 years old and first(*) of true neutral guilds in Atys.
(*) This statement is contested, but we are certainly the longest lasting.
<clowns | me & you | jokers>