Back in October 2025, others also had issues with the Tor Browsing option missing. Turns out it was disabled. Here is a link to the discussion:
They said we should see a fix in a few weeks, with update 1.84 but now it is 1.86 and my browser says it is up to date, but the tor browsing option is still marked as disabled in my local state. Anyone else still having this issue? Is there something else I need to do to re-enable it after the update?