Why are shiny apps always getting immediately grayed out from RStudio behind `https://`?

问题

Every time I try to run a shiny app from RStudio Server 1.2 it gets immediately grayed out. This does not happen when deployed on the Shiny Server-apps work fine there. Both are behind https:// links. I tried running the same app from an http:// link and the app ran normally. What is causing this?

Steps to reproduce:

1. start a new Shiny app project File > New Project > Shiny Web App
2. click "Run App" with the old faithful app

Here is what the javascript console shows:

A coworker is also using the same instance of RStudio to run their shiny apps and their apps are not being grayed out by default. It appears localized to my account. We are sharing the same set of installed R packages and neither of us have anything in our .Rprofile and .Renviron. Why could this be?

R version 3.5.1 (2018-07-02)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: CentOS Linux 7 (Core)

We are both running with shiny_1.2.0.

来源：https://stackoverflow.com/questions/57377342/why-are-shiny-apps-always-getting-immediately-grayed-out-from-rstudio-behind-ht