Open Bug 1429781 Opened 7 years ago Updated 5 years ago

Scrolling stops working on iOS

Categories

(bugzilla.mozilla.org :: User Interface, defect)

Product:
bugzilla.mozilla.org
Component:
User Interface
Version:
Production
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

People

(Reporter: dylan, Unassigned)

References

Details

(Whiteboard: [october-2019-bmo-triage])

(from Jean-Yves Avenard [:jya] from bug 1429251 comment #4) > I'm re-opening this bug as while scrolling when it works, works well. > > The fact is that about one in four, you can't scroll up at all. it gets > stuck you have to scroll down, then up, down, up, down until that silly > browser accepts to scroll up again.
Even in desktop Safari, scroll on <main> is not sometimes smooth at this time. It's probably a WebKit bug, but I'm looking at how this can be worked around.
Some findings: * The issue can be reproduced when JavaScript is disabled * The page can be scrolled smoothly when Safari's window is not getting focused * I don't see any slowness on other long pages like https://bugzilla.mozilla.org/page.cgi?id=quicksearch.html https://bugzilla.mozilla.org/describecomponents.cgi?product=Core I doubt that the legacy table layout on the bug page is the culprit.
On desktop Safari, CSS `will-change: transform;` will solve the issue, as described in https://dev.opera.com/articles/css-will-change-property/ Will test it on iOS once I get an iPad next week.
Assignee: nobody → kohei.yoshino
Status: NEW → ASSIGNED
I cannot reproduce the issue with the current iOS version of Safari. :jya, can you please test again? I'll separately address the smooth scroll issue on desktop Safari mentioned in Comment 3.
Flags: needinfo?(jyavenard)
See Also: → 1469733
yes, I'm seeing this very often, with both safari and firefox. I typically scroll up then down a few times, and magically I can scroll down again after that.. sometime it takes several retries for things to work When is the change going live in bugzilla so I can test again?
Flags: needinfo?(jyavenard)
No, we haven’t changed anything yet. Will test with my iPad again…
I can reproduce it fairly consistently by opening the comment (on a busy bug) from the mail client (apple mail)
I have analyzed this today and believe that this is a bug in Mobile Safari, because the same issue can be observed on Google News adopting a similar layout/CSS. Will revisit later, but I’d close this for now.
Status: ASSIGNED → RESOLVED
Closed: 6 years ago
Resolution: --- → INVALID

I think I have found a solution for this.

Status: RESOLVED → REOPENED
Resolution: INVALID → ---

Well, no, I still see the issue. I’ll revisit this after iOS 13 is out.

Status: REOPENED → NEW
Assignee: kohei.yoshino → nobody

This may be related to an issue with taking a screen shot of a full page in Bugzilla that extends past the viewport Firefox Screen shots?

Whiteboard: [october-2019-bmo-triage]
You need to log in before you can comment on or make changes to this bug.