MathJax doesn't work in FF

[screeper]

Hey,
It seems like MathJax isn't working for Axis Labels. In annotations it works fine. Example can be found here:
http://jsfiddle.net/x571bzom/

[etpinard]

This is what I'm seeing in Chrome 70:

Could you tells what browser you are using and share a screenshot of what you're seeing. Thank you!

[screeper]

This is my view in FF 63.0.3:

The $\chi$ (x axis label) is somewhere on the top left

[etpinard]

Ok thanks!

[etpinard]

Related: #2616

[etpinard]

Merging into #2616