[q3k]

Restore sanity by applying the following patch: https://code.hackerspace.pl/q3k/q3kverlay/tree/x11-libs/gtk+...

(or just use this overlay if you run Gentoo)

[sametmax]

Any tutorial on this ? And above all, how to automate it so that it's applied after updates ?

[halkotron]

You can try https://launchpad.net/~lubomir-brindza/+archive/ubuntu/nauti...

I'll try to keep it up to date.

(or the Nemo file browser, which also retained split-window functionality)

[q3k]

Depends on the distribution you use. Some (Debian, Ubuntu) make it extremely annoying to apply your own patches to packages, while others (Arch, Gentoo) make it very easy.