1Password 6 used to work in Firefox until a few weeks ago

I see that someone else already posted about this issue, but that discussion was closed: 1Password 6 - Firefox plugin no longer working | 1Password Community

While I understand that it is not officially supported anymore, the Firefox extension for 1Password 6 had been working perfectly up until just a few weeks ago.

I'm still on 1Password 6 because that was the last version that supported standalone vaults. Having my password manager in the cloud, behind a subscription, which I could lose access to if the company ever went out of business or if they just decided to suspend my account for who knows what reason… Yeah, no thanks. My password manager needs to live locally on my devices, independent of any company's solvency or admin policies.

It was a good long run, but I guess it's finally time to move on to a different self-hosted solution. 🫗