User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:82.0) Gecko/20100101 Firefox/82.0

Steps to reproduce:

Bug looks very similar to Bug #1552559 and Bug #1544273, which were marked as resolved.

Under preferences --> search --> one-click search engines remove amazon, bing, duckduckgo, ebay and ecosia.
Then restart Firefox. Sometimes restarting is not sufficient to reproduce, but a relogin+restart always is.

Actual results:

The search engines ecosia, amazon and ebay are added automatically to the list, and the engine "leo.org GER-ENG" is moved to the last position of the list and has no visible icon.

Expected results:

Nothing, the search engines settings should stay as I set them.

I can reproduce the bug with a fresh, new profile, and even with a new user.

This happens on OpenSuse Leap 15.1 and 15.2. I already asked for help in a German forum, without result. Strangely, some users could reproduce, others couldn't: https://www.opensuse-forum.de/thread/64193-firefox-automatischer-reset-der-suchmaschinen-nach-login/

Yup this looks like the same issue we are addressing in 1675624 so duping there, cheers for the info