When I copy a section or the whole course to "Sharing Cart"(block_sharing_cart), than paste it to another course. MathJax seem to convert content incorrectly after the page was loaded, but somehow the content of original course is working just fine. And the place that error occur, in the console of the browser doesn't seem to show any error. It just replace the the equation with "[Math Error]". When I compare the data between those courses, they seem to be identical.