1748952 - Scrolling is not happening or stuttering on Firefox Android

Status: RESOLVED INCOMPLETE

(Core :: Performance, defect)

Description

[Karl Dubost💡 :karlcow]

This has been reported on webcompat.com.
It works correctly on Chrome Mobile, on Firefox Desktop and Firefox Desktop + RDM + Firefox Mobile UA.
It doesn't work on Firefox Android latest nightly

Steps to reproduce:

1. Go to https://www.thai-masszazs.net/en/
2. Scroll

The site is not scrolling at all.

3. With devtools. remove the overflow: hidden on the html element.
4. Scroll again slowly

The site is stuttering

5. Scroll fast and release

The site is scrolling

6. slightly touch the screen

the site goes back to the top.

• first profile after loading the site and trying to scroll.
  https://share.firefox.dev/3q1IY83
• second profile with overflow: hidden removed on html
  https://share.firefox.dev/3n2BuzH

Comment 1

[Julien Wajsberg [:julienw]]

Is it overflow: hidden or overflow-x: hidden Karl?
I see the latter also on Desktop, and maybe we're not handling it properly on Fenix?

Comment 2

[Benjamin De Kosnik [:bdekoz]]

Thank you for your bug report, I can reproduce with Fenix Nightly (98.0a1) on android (Samsung S20). This seems like a webcompat issue, not performance. It is odd that it works on FF desktop and not on Fenix android....

Can somebody from the Fenix team try to dig into this and see what the issue is?

Comment 3

[Karl Dubost💡 :karlcow]

Attachment: devtools screenshot

on the html element, overflow: hidden in the style attribute

Comment 4

[Karl Dubost💡 :karlcow]

Oh that might just be a duplicate of Bug 941076

Comment 5

[Karl Dubost💡 :karlcow]

They use /* jquery.nicescroll 3.0.0 InuYaksa*2012 MIT http://areaaperta.com/nicescroll */
hmmm yes probably not a perf issue. Let me go back to the original issue on webcompat.