Can't remove mkcert from Tor Browser

Hi, I've tried to add an mkcert I generated for some hostnames.

When I add it to the Authorities, I can't see it in the list. However, it seems that the URL shows that the cert is loaded.

I updated the rootCA.pem file so I want to remove the existing one, but because I can't see it in the list, I can't remove it from the Authorities section.

Is there a way of doing this on a terminal or any other tips?

I'm using Tor Browser 10.5.2 (based on Mozilla Firefox 78.12.0esr)

The report names no repository file, test, or entry point. Start by reproducing certificate import and removal behavior in Tor Browser 10.5.2, based on Firefox 78.12.0esr, using the updated rootCA.pem. Done means establishing whether the existing mkcert authority can be removed and identifying a verified terminal or browser procedure.

Written by the indexing model from the issue text.