alt Hacker NewsNice, yes, a fresh Tails restart would definitely teardown the Fox process. And I think if you're disciplined, then purely ephemeral environments are the best mitigation for process-level state leaks like this IndexedDB ordering bug.
For those who want an ephemeral setup but prefer the Chromium engine over Firefox, you can achieve a similar "destroy after use" workflow using BrowserBox. It has a tor-run function that connects Chrome to a Tor SOCKS proxy and wraps all auxiliary network calls over torsocks.
You can easily spin up a purely ephemeral session using a GitHub action [0] so that absolutely no state persists once you close it. As a bonus, you can also run the BrowserBox instance itself as an onion hidden service while browsing over Tor.
Eh but that's a commercial tool. They don't even seem to have a free community version. I wouldn't pay for that. And prefer Firefox anyway.
For remote browser tools I use neko https://github.com/m1k1o/neko
But with Tor I like to have more safeguards. So I prefer to run tails in an isolated environment.