Specifically, the characters ;@[\]^!"#$ are replaced by θ~αβΔ.
Sigh... This ancient printer could render them, but apparently the Chrome browser on my modern Android cannot.
News YC font-family: Verdana, Geneva, sans-serif;
Per https://unicode.scarfboy.com/ these are the characters (formatting issues are expected):
U+03B8 θ GREEK SMALL LETTER THETA
U+2713 CHECK MARK
U+203E ‾ OVERLINE
U+2191 ↑ UPWARDS ARROW
U+2193 ↓ DOWNWARDS ARROW
U+007E ~ TILDE
U+03B1 α GREEK SMALL LETTER ALPHA
U+03B2 β GREEK SMALL LETTER BETA
U+0394 Δ GREEK CAPITAL LETTER DELTA
U+03D5 ϕ GREEK PHI SYMBOL
Specific characters that aren't showing up:
U+2713 CHECK MARK, U+203E ‾ OVERLINE, U+2191 ↑ UPWARDS ARROW, U+2193 ↓ DOWNWARDS ARROW, U+03D5 ϕ GREEK PHI SYMBOL
Arial contains most of these, Verdana does not. That's the limit of my knowledge of webified things.
Character encoding is such fun!
Update: Ken, if you see this, it's specifically the characters encoded with numeric entities that have the problem on my devices. I used the Chrome dev tools to replace these with the actual characters on my Windows and Ubuntu devices and they rendered OK.
I don't see how that's the fault of Chrome or Android.