The Google Issue Tracker link [0] on the site shows access denied for me. Not sure if this is due to it being reappraised or because I specifically don't have access

[0] https://issuetracker.google.com/issues/509520497

If it was filed as a security issue, most well-set-up projects with public issue trackers would keep it closed off only to a reporter and internal security audit team.

Perhaps it was never really declassified in the tracker.

You can't access issues that are not assigned to you. I remember reporting a bug via VRP once, and it was marked as duplicated with another id, that I cannot access and see the original report.

Security sensitive issues have restricted visibility.

I'm going to assume good intent against every possible signal here. See https://www.gov.uk/types-of-british-nationality/british-subj... for why you're wrong