019-mathjax not rendering properly in Rstudio

[cjvanlissa]

This example does not render mathjax when running the Shiny app in Rstudio, replicated on several computers. When opening the app in google chrome, mathjax is correctly rendered.

[wch]

It works for me in RStudio (1.2.679, Windows). Can you provide information about what platform you are running on?

[cjvanlissa]

Dear Winston, running Rstudio version 1.1.453, R version 3.5.0, Shiny version 1.1.0 on Windows 7 Enterprise SP1. Other computers were also on Windows 7 Enterprise SP1, but I am not sure what version of Rstudio they were running.

[wch]

Do you have a firewall and use a web proxy? The way that MathJax is implemented in Shiny, it gets the JS file from a CDN instead of locally. The URL it uses is this:
https://mathjax.rstudio.com/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML

[cjvanlissa]

Would that explain why it is not rendered in the Rstudio popup window, but is rendered correctly when I pop it out to my browser?

[wch]

Yes, if Chrome is configured to use a proxy but Rstudio is not.

[cjvanlissa]

Alright. I don't know how to check this; I just used factory settings for both when installing.