Rated 5 out of 5 stars

Από τον/την MCOD στις Ιούλ. 9, 2018 · μόνιμος σύνδεσμος

Solution I found for this feature recently, using no addons or third-party software:
https://forum.manjaro.org/t/howto-enable-tab-switching-in-firefox-using-mouse-wheel/39954