Can you post what didn't render correctly?I too am having a great deal of trouble with LaTeX here. Last evening I had prepared a long bit for a thread on complex numbers. It rendered perfectly in the preview but then it was a total mess when I tried to post it. As I have said, I have used TeX since c.1985 I have to think that the fault is not my coding.
Wasn't me..........Ted had logged in and out a few times, yesterday. He may be fiddling with stuff.
This only instance of the markup not rendering that I've seen and was able to fix was caused by an embedded strikeout BBCode in the markup.Wasn't me..........
There's really nothing complex about the LaTeX handling on this site, and it's essentially the same as the old site. It's just taking your raw input between TEX or MATH bbcodes and sending it over to MathJax to render. I would like to resolve the problem but it seems very intermittent and non-deterministic?