1035876 - Janky scrolling on online Time article

Status: RESOLVED FIXED

(Firefox for Android Graveyard :: Toolbar, defect)

Description

[Aaron Train [:aaronmt]]

http://people.mozilla.org/~bgirard/cleopatra/#report=53734ea36450ee21b901612508f44fccc09cb367

Visit: http://time.com/2857448/mozilla-25-smartphone-firefox/ and start scrolling down the article. See the clunky scrolling throughout the article.

See profile above.

Ran on Nightly (07/08)
Samsung Galaxy SV (Android 4.4.4)

Comment 1

[Chris Lord [:cwiiis]]

I've switched to the Gaia systems UI team - while I don't mind looking at these issues, at some point I'm going to have to draw a line... So doing so now.

If we're short on resources and something is urgent, of course I'm more than happy to have a look. Otherwise, I'd prefer not to be cc'd on stuff like this unless there's a specific question I can help answer immediately :)

Comment 2

[Kartikaya Gupta (email:[e-mail])]

We're falling back to synchronous scrolling on this site because it's an overflow:scroll div that's scrolling. This will be better when we switch to the C++ APZC.

Comment 3

[Steve Manser]

Well just thought I would see if there was any mention of this on Bugzilla, not sure if this is the same issue but I cannot scroll at all on this size, no vertical scroll bar and the usual fix (selecting text in the article to force it to scroll does not work either).  Am on 2.30.0, on OS X 10.9.5.

Article URL;

  https://time.com/money/3502243/warren-buffett-market-crash/

Comment 6

[bug.zilla]

I'm seeing laggy scrolling on a number of sites. Especially now on Android 5.0.2 Firefox seems out of place when the rest of the platform and browsers scroll smoothly.

https://bugzilla.mozilla.org/show_bug.cgi?id=716776
https://bugzilla.mozilla.org/show_bug.cgi?id=933515

I have tried changing values for ui.scrolling.friction_slow and ui.scrolling.friction_fast but it didn't really help. Are you aware of any other about:config prefs that can be changed?

The main issue seems to be with the way scrolling decays which is not smooth but quite jerky.

Thanks

Comment 7

[Kartikaya Gupta (email:[e-mail])]

(In reply to bug.zilla from comment #6)
> I'm seeing laggy scrolling on a number of sites.

URLs?

> The main issue seems to be with the way scrolling decays which is not smooth
> but quite jerky.

Most likely this is because we are doing synchronous scrolling on these pages because it is a subframe and not the root-level page that is scrolling. Bug 776030 will address that issue.

Comment 8

[bug.zilla]

Hi, I've filled bugs for the URLs where I've encountered issues.
I'll follow progress on https://bugzilla.mozilla.org/show_bug.cgi?id=776030

Thanks

Comment 10

[Kartikaya Gupta (email:[e-mail])]

The URL in comment 0 is smooth now in Nightly with C++ APZ. Marking this bug dependent on APZ riding the trains, so that we can set the right target milestone when it ships.

Comment 11

[Kartikaya Gupta (email:[e-mail])]

These pages all seem to scroll well in 48 with APZ.