firefox extetion works on PC but not well on Android
the extention: https://github.com/pdfan/touch-scroll-bar
it works when the page zoomed in/out on PC, the scrollbar shows on the right place, and respond correctly. it works well on android when page not zoomed in. but when zoomed, it shows not on the expected place as on PC, and does not respond, use the firefox webIDE to debug, it shows the response site is on a different place. the android is 6.0.1 on a tablet machine. firefox is nightly version of April 12.
Wšě wotmołwy (4)
and the response is produced when the webIDE marked element position is touched.
the same problem with firefox nightly 61.0a1 (2018-04-13)
I don't expect this extension is going to work on Android.
It's uses pointer events, which aren't available for android yet.
https://developer.mozilla.org/en-US/docs/Web/Events/pointerdown
yes, it is, open about:config search dom.w3c_pointer_events.enabled and set it to true. will work. and the problem is resolved