Using Firefox v99 or v100 with SSL self signed certificate when you launch the OC webapp you may receive a blank screen. No problem with Chrome and Edge.
The first panel that appears using a self signed certificate (this also appear with other browsers) is:
at this point to go ahead you should click on "Accept Risk and Continue" and you should receive the Spectrum login panel:
and be able to login to OC web page.
At this point, clicking on OC webapp you will receive a blank page and in debug you may see the following errors:
See https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors/CORSDidNotSucceed for the CORS request did not succeed error.
Release : 21.2.10
Component : Spectrum OneClick
1) Cut and Paste in a new Firefox session the URL HTTPS that returned the CORS error. You should get a new Potential Security Risk.
2) Click on "Accept the Risk and Continue"
3) Reload the OC webapp blank page and the OC console should be opened successfully.