MathJax doesn’t, but LaTeX does. Math & Symbols - Anki Manual
If you’re talking about this thread – “HttpError { code: 400, context: "missing original size", source: None } “ – it sounds like they were using a private sync server as well. That’s not the case with you, is it?
Some other possible solutions –
Or is it possible that you have an enormous collection? I’ve seen this error before in conjunction with “collection too large” sync issues – Constant Errors Uploading / Sync . I don’t see an AnkiWeb account associated with the address you used here, but you can check the size of your collection yourself at the spots I mention in the other thread.