Package: firefox Version: 62.0-1 Severity: normal I believe this happens since 62.0 (not fully sure about this). I reproduced this with a fresh profile and with no extensions active and also for a fresh Linux user account.
Firefox keeps restoring the same search engines again after firefox restart. This means search engines that I deleted appear again and the ones that I modified (e.g. adding a shortcut) are reset to their original state. In detail: When I delete all search engines but one the following get restored (I guess the engines relate to my DE localization): Amazon.de, Debian packages, Ecosia, LEO Eng-Deu, Wikipedia (de). If I delete any of these search engines they reappear after firefox restart. I am unable to add shortcuts for Amazon.de, Ecosia, LEO and Wikipedia as the shortcuts are removed after restart. Additional search engines I installed are not touched, including the Debian package search installed by the deb. If I delete a search engine and try to reinstall it again immediately through mycroftproject, firefox tells me that a search engine with the same name already exists (though not visible in the list of search engines at this time). -- Package-specific info: -- Addons package information -- System Information: Debian Release: 9.5 APT prefers stable APT policy: (950, 'stable'), (900, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.18.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages firefox depends on: ii debianutils 4.8.1.1 ii fontconfig 2.11.0-6.7+b1 ii libatk1.0-0 2.22.0-1 ii libc6 2.27-6 ii libcairo-gobject2 1.14.8-1 ii libcairo2 1.14.8-1 ii libdbus-1-3 1.10.26-0+deb9u1 ii libdbus-glib-1-2 0.108-2 ii libevent-2.1-6 2.1.8-stable-4 ii libffi6 3.2.1-6 ii libfontconfig1 2.13.0-5 ii libfreetype6 2.8.1-2 ii libgcc1 1:6.3.0-18+deb9u1 ii libgdk-pixbuf2.0-0 2.36.5-2+deb9u2 ii libglib2.0-0 2.56.1-2 ii libgtk-3-0 3.22.30-2 ii libjsoncpp1 1.7.4-3 ii libnspr4 2:4.20-1 ii libnss3 2:3.39-1 ii libpango-1.0-0 1.40.5-1 ii libsqlite3-0 3.24.0-1 ii libstartup-notification0 0.12-4+b2 ii libstdc++6 8.2.0-6 ii libvpx5 1.7.0-3 ii libx11-6 2:1.6.4-3 ii libx11-xcb1 2:1.6.4-3 ii libxcb-shm0 1.12-1 ii libxcb1 1.12-1 ii libxcomposite1 1:0.4.4-2 ii libxdamage1 1:1.1.4-2+b3 ii libxext6 2:1.3.3-1+b2 ii libxfixes3 1:5.0.3-1 ii libxrender1 1:0.9.10-1 ii libxt6 1:1.1.5-1 ii procps 2:3.3.12-3+deb9u1 ii zlib1g 1:1.2.11.dfsg-1 Versions of packages firefox recommends: ii libavcodec57 7:3.4.3-1 ii libavcodec58 7:4.0.2-1+b1 Versions of packages firefox suggests: ii fonts-lmodern 2.004.5-3 pn fonts-stix | otf-stix <none> ii libcanberra0 0.30-3 ii libgssapi-krb5-2 1.15-1+deb9u1 ii libgtk2.0-0 2.24.32-3 -- no debconf information