I see plenty of "Math Processing Errors" in the close as duplicate preview:

enter image description here

  • $\begingroup$ Probably related. Usually, the Math Processing Error goes away when you choose a duplicate target. But of course their presence in the selection list doesn't make choosing easier. $\endgroup$ Commented Nov 16, 2015 at 11:01
  • $\begingroup$ You might want to include browser/OS information in this report. MathJax is rendering fine for me in that dialog (Chrome 46.0.2490.86 on Windows 8.1). Also, with respect to the (review) tag, does this only happen when you are in the close votes review queue, or does it happen when you are voting to close outside of the queue as well? $\endgroup$
    – user642796
    Commented Nov 16, 2015 at 11:10
  • $\begingroup$ @ArthurFischer I use Firefox 42.0 Windows 7, happens only during review... $\endgroup$
    – draks ...
    Commented Nov 16, 2015 at 11:16


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