MathJax in Wiki fails when url contains '#!' (BB-9396)

I'm not sure what the precise cause is, but MathJax is failing to render correctly when I follow this link:

https://bitbucket.org/davidsd/open-bootstrap-collaboration/wiki/LaTeX%20Test.rst#!latex-test

However, if I remove the '#!latex-test' from the url, it loads fine. This is an issue for me because the automatically generated TOC here:

https://bitbucket.org/davidsd/open-bootstrap-collaboration/wiki/Home

has links that include the '#!' stuff.