(In reply to Marzanna from comment #18)
> I'm using firefox (from official repos) on Ubuntu 17.04. AFAIK it should be
> compiled with gtk3 support.
You're right, the Ubuntu 17.04 Firefox package is linked against GTK3.
Could you try a Nightly build from here [1], and see if it works, and if it doesn't, can you post what the Nightly build says in about:support under "Asynchronous Pan/Zoom"? (I ask because in Firefox >= 53, we changed the way touch support is reported there to be more accurate (bug 1282306), and that may give us more information.)
(In reply to Marzanna from comment #18)
> I'm using firefox (from official repos) on Ubuntu 17.04. AFAIK it should be
> compiled with gtk3 support.
You're right, the Ubuntu 17.04 Firefox package is linked against GTK3.
Could you try a Nightly build from here [1], and see if it works, and if it doesn't, can you post what the Nightly build says in about:support under "Asynchronous Pan/Zoom"? (I ask because in Firefox >= 53, we changed the way touch support is reported there to be more accurate (bug 1282306), and that may give us more information.)
[1] https:/ /www.mozilla. org/en- US/firefox/ channel/ desktop/ #nightly