I found that using LaTeX on profile/posts on my profile there is '|' in last of every line. Can you help me to correct these error, please?
It is a bug I have been having for the last 2-3 days. It happens with all MathJax rendering, not just in a profile. The culprit must be a browser addon, because when I start a new, clean, browser profile, I don't see it.
I have not yet looked into it to see which addon is causing the problem. I am inclined to suspect LastPass, because it was updated soon before I noticed it.
Do not use MathJax in your profile. It won't work on sites without MathJax, e.g. Meta. Also, nobody wants to see colorful markup in your description.
I have looked at your profile and some of your posts. I can not see any '|'s there. Please provide a screenshot of the problem.