I have added an answer and tried to provide the latest mathjax setup: https://webapps.stackexchange.com/a/153527/196564 Kindly check it and let me know if any improvement can be made for the mathjax configuration. My main target is to obtain maximum mathjax efficiency in writing-reading mathematical articles in my Blogger site (http://koutuholi.blogspot.com/).
I just found an issue with the minus sign in mathjax. For example: I wrote a metric matrix signature as $(+---)$. The 3 minus signs are not appearing the same and not equally spaced. I am wondering if it's due to my config or not.