We recently upgraded to version 7.14.0 of camunda-webapp-webjar. After this upgrade the css for cockpit stopped loading. I found there were changes done to the way we write / manage plugin in 7.14.0 ( "A Reworked Cockpit Plugin System" https://camunda.com/blog/2020/10/camunda-bpm-runtime-7-14-0-released/)
When I do inspect on cockpit page I see below
<noscript>You need to enable JavaScript to run this app.</noscript>