Problem with FF 68 and Cockpit plugins

[Mark Reynolds]

So we just noticed that FireFox has problems loading our UI plugin on 
Fedora 30.  Sometimes it works, sometimes it does not (typically it does 
not work even with reload).  We don't see any problems with other 
browsers.  There are no console log errors or warnings.  It's just a 
blank screen.  It also appears the plugins listed below ours also do not 
work (our plugin is "389 Directory Server" so it's always first in the 
list.  Not sure it's related or not to the other plugins not working

Is anyone else seeing problems with the latest version of FF?

I'm not sure if this is something that has to be fixed in Cockpit, or 
our plugin, or FF.

To see the problem please install the rpms from here, or visit: 
https://kvm-03-guest17.hv2.lab.eng.bos.redhat.com:9090/389-console 
root/redhat

https://koji.fedoraproject.org/koji/taskinfo?taskID=36350813 
https://koji.fedoraproject.org/koji/taskinfo?taskID=36350813

Thanks,

Mark