Closed
Bug 978497
Opened 10 years ago
Closed 8 years ago
Scroll events ignored sometimes
Categories
(Firefox for Android Graveyard :: Toolbar, defect)
Tracking
(firefox30 affected)
RESOLVED
INCOMPLETE
Tracking | Status | |
---|---|---|
firefox30 | --- | affected |
People
(Reporter: rnewman, Unassigned)
References
()
Details
I was reading a fairly long forum page, and noticed that pretty much every other scroll event was being ignored. Finger down, finger move, finger up, no response. This seems to roughly correlate to the prior scroll being a non-fling: if I wait for the page to stop moving, then lift my finger, the next scroll is ignored. If I fling, I can keep flinging and things will work. Note also the jank when starting a scroll. Really unpleasant experience. I got a video, in which -- naturally -- it doesn't happen every time, but often enough to be noticeable. http://youtu.be/6fjYyPgKYxU
Comment 1•10 years ago
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Should see if backing out bug 960146 helps.
Reporter | ||
Comment 2•10 years ago
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wesj: can you CC me on that bug?
Comment 3•10 years ago
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added
Reporter | ||
Comment 4•10 years ago
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I can still reproduce on current Nightly (2014-03-02), after the backout of Bug 960146.
Comment 5•10 years ago
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I've been hitting something similar to this pretty often. STR: 1) Go to CNN.com 2) Scroll up and down while the page loads Following these STR, the page completely locks up for several seconds. In my case, I think it's simply Gecko freezing rather than scroll events being ignored -- clicks and zooming also aren't working during this period. Richard, could this be what you're seeing, or is this a different bug?
Reporter | ||
Comment 6•10 years ago
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(In reply to Brian Nicholson (:bnicholson) from comment #5) > Following these STR, the page completely locks up for several seconds. In my > case, I think it's simply Gecko freezing rather than scroll events being > ignored -- clicks and zooming also aren't working during this period. > Richard, could this be what you're seeing, or is this a different bug? Given the stutter even when a scroll succeeds, it might be that some layout operation is hanging Gecko for long enough -- it's a fairly big page with lots of "forum junk". I have a vague recollection of being able to wait a while, though, and still have the next swipe fail, but I could easily be misremembering.
Comment 7•10 years ago
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Getting a profile when this happens would help to see what Gecko is doing. https://developer.mozilla.org/en-US/docs/Performance/Profiling_with_the_Built-in_Profiler
Comment 8•10 years ago
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Since comment 5 is potentially a different bug, I filed bug 980464 to track the Gecko freezing separately.
Comment 9•8 years ago
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Closing since the issue in comment 0 will probably have gone away with the switch to APZ, assuming it wasn't fixed before that. Please reopen if you still see this.
Status: NEW → RESOLVED
Closed: 8 years ago
Resolution: --- → INCOMPLETE
Updated•3 years ago
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Product: Firefox for Android → Firefox for Android Graveyard
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Description
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