These so-called "hardening scripts" cause a lot of issues and volunteers have to waste their time helping clueless users who copied them without understanding what they do.

I see you're quite active regarding FF. Nevertheless I'm not sure what you're talking about. I've installed Betterfox ESR on Windows, Linux and Android with no apparent issues.

Disabling anonymous telemetry just harms the project. It doesn't give you any "privacy" benefit.

Browsers discard tabs by default, but only when your system is running out of memory. You can use Auto Tab Discard to discard all or most tabs automatically after a certain time.

Use this extension created by a Mozilla employee: https://addons.mozilla.org/addon/chrome-mask

THANK YOU. I've been running a Chrome User-Agent for a few years, but my highly-manually UA editing was obnoxious. This is just what I needed.

Chrome has always had the capability of adding custom search engines. They are just not entangled with your bookmarks.

Firefox is actually going to remove this feature from bookmarks, and you'll have to create new engines from this page: about:preferences#search

It has everything to do the browser feature known as "custom search engines", which is a URL replacement capability that was never limited to actual search engines.

As I said before, Mozilla is going to merge your bookmark keywords with custom search engines: https://bugzilla.mozilla.org/show_bug.cgi?id=1650874

If you want them to fix it:

1) Generate a profile performance with https://profiler.firefox.com/

2) Submit the link with your results to https://bugzilla.mozilla.org/

Already made the bug report.

Updates aren't supposed to reset any setting. Submit a bug report for them to fix whatever is doing that for you: https://bugzilla.mozilla.org/

File an issue on Bugzilla with your latest crash ID to help the developers fix it: https://bugzilla.mozilla.org/

Power users interested in this niche feature can use a script: https://old.reddit.com/r/firefox/comments/1m594nv/multi_tab_...

I think with UserChromeJS you can run TabMixPlus too. I don't remember if it needs anything else. (Or a fork like Waterfox, of course.)

But like, if we're turning signature checking and sandboxing off, we're getting pretty far from stock Firefox. And of course, they can (and often will) break it on every update.

> both to isolate stuff to break cookie tracking

You don't need containers for this: https://total-cookie-protection-test.netlify.app/