I don't see any UTF-8 issues open; if there are this is probably a subset/related/duplicate.
Any character from the emoticon block (1F600 through 1F64F) will cause a 5xx error - first noticed with a [thumbsup] but confirmed with U+1F600. Same issues with a bunch of other unicode characters.

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NickWilde created an issue. See original summary.

drumm’s picture

drumm
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Location NY, US
CreditAttribution: drumm at Drupal Association commented

We’ve upgraded Drupal.org sites to 7.50 or later, the database changes for the MySQL support still need to happen.

NickDickinsonWilde’s picture

NickDickinsonWilde
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Primary language English
Location Victoria, BC (T'So-uke lands)
CreditAttribution: NickDickinsonWilde commented

Yeah I was guessing it was probably most of UTF8. Any chance of a filter/warning instead of a hard fail in the meantime or are those db changes planned for the near future?

drumm’s picture

drumm
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Location NY, US
CreditAttribution: drumm at Drupal Association commented
Status: Active » Closed (duplicate)

This was fixed #2463607: Drupal.org chokes on emojis 🎉