Shiny apps displaying as unstyled HTML

[hrubyfi]

My R shiny apps started displaying as unresponsive HTML.

Screenshot of the example app:

This is a screenshot from the unmodified provided example: https://github.com/openanalytics/shinyproxy-config-examples/tree/master/02-containerized-docker-engine.

This issue is also present in my personalised shinyproxy app, which worked 5 months ago perfectly. The issue is specific to R shiny apps (Python Shiny apps work), both from my dockerized shiny apps and from the provided openanalytics examples. There is nothing unusual in the shinyproxy log.

I'd be grateful for any advice, thanks.

[hrubyfi]

Found the problem. Some javascript and css files were being blocked by my firewall.