Using "MOZ_USE_XINPUT2=1" &e10s worked for me (https://bugzilla.mozilla.org/show_bug.cgi?id=1268599#c10), but not very smooth (scrolling, afterwords opening the menu item, then trying to scroll results in an un-scrollable page). Fedora already compiles FF with "MOZ_USE_XINPUT2=1", which is very smooth on my tablet.
However, it would be interesting how this is handled by Firefox for Android, which clearly needs touch support and XINPUT2.
Using "MOZ_USE_XINPUT2=1" &e10s worked for me (https:/ /bugzilla. mozilla. org/show_ bug.cgi? id=1268599# c10), but not very smooth (scrolling, afterwords opening the menu item, then trying to scroll results in an un-scrollable page). Fedora already compiles FF with "MOZ_USE_ XINPUT2= 1", which is very smooth on my tablet.
However, it would be interesting how this is handled by Firefox for Android, which clearly needs touch support and XINPUT2.