I have installed librewolf from flatpak with pamac package manager.
Actually it never properly worked to open an external link to librwolf neither to insert & start a link directly. I always thought it were a security feature.
I have reinstalled it via my console to make sure it may not a pamac problem. flatpak uninstall --delete-data io.gitlab.librewolf-community flatpak install flathub io.gitlab.librewolf-community
After by systematic testing I figured out a very strange behaviour. If I open librewolf manually first than click on a link in Thunderbird the link is opened. If I have closed librewolf and than click on a link in TB with librewolf as a default browser it does not work.
I have tried to install the AUR version with pamac. After 4 hours the installation is not finished, yet.
Actually I like Mullvad. But I need the synchronisation function of my bookmarks and passwords. This works with librewolf but seems not to work with Mullvad.
Also probably the link problem stays the same so I have to install the AUR version instead of the flatpak one!?
Or is there any workaround to enable opening an external with a flatpak browser which is not opened, yet?
It is an already compiled binary maintained by the same person who provides the librewolf AUR package. I just installed it on my mini-PC - it took less than a minute to finish the build and installation on my Testing branch system. The browser opened successfully.
I moved my .librewolf profile from ~/.var/app/io.gitlab.librewolf-community/.librewolf/
to ~/.librewolf
Finally, I went to the application menu, under the browser category, and right-clicked on the AUR librewolf shortcut and selected “Manage profiles”. After selecting the correct profile, it now also works with the old settings from the flatpak installation. By the way I am using KDE Plasma.