double prime fails in svg mode

[70ray]

Issue Summary

A summary of the issue and the browser/OS environment in which it occurs. If
suitable, include the steps required to reproduce the bug.

Steps to Reproduce:

1. This is the first step
   include in html header

<script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-svg.js"></script>

2. This is the second step
   in body \[''\]
3. Further steps, etc.
   No conversion takes place. The following message appears in console:
   TypeError: t.setAttribute is not a function tex-svg.js:1:276942

Any other information you want to share that is relevant to the issue
being reported. Especially, why do you consider this to be a bug? What
do you expect to happen instead?

Works correctly with versions other than svg

Technical details:

• MathJax Version: 3
• Client OS: Linux KDE Neon
• Browser: Firefox 75.0

Supporting information:

• Please supply a link to a (live) minimal example page, when possible.
• If your issue is with the display of the mathematics produced by MathJax, include a screen snapshot that illustrates the problem, when possible.
• Check your browser console window for any error messages, and in crude them here.
• Include the MathJax configuration you are using, and the script tag that loads MathJax itself.

[dpvc]

Thanks for your report. This turns out to be the same issue as #2402, and the work-around listed here should resolve the issue for you until the next release, when it will be fixed.

[70ray]

Thanks for the quick response.

[dpvc]

Fixed in v3.1 released today.