Open Bug 1470315 Opened 3 years ago Updated 2 years ago

The layout becomes blurry when the page is scrolled down/up

Categories

(Core :: Panning and Zooming, defect, P3)

62 Branch
Unspecified
Android
defect

Tracking

()

Webcompat Priority revisit
Tracking Status
firefox62 --- affected

People

(Reporter: karlcow, Unassigned)

References

()

Details

(Whiteboard: [webcompat])

Spin off of https://webcompat.com/issues/17359

    1. Navigate to https://es.m.wikipedia.org/wiki/Anexo:Pa%C3%ADses_por_%C3%ADndice_de_desarrollo_humano 
    2. Scroll down the page.
    3. Observe the page layout.
        
**Expected Behavior:**
The page is fully visible.
 
**Actual Behavior:**
Some section of the page is blurred.

**Note:**
    1. Also reproducible when scrolling up the page.
    2. Reproducible on Firefox 60.0.2 Release.
    3. Not reproducible on Chrome  67.0.3396.87.
    4. Screenshot attached.

**Watchers:**
@softvision-sergiulogigan
@softvision-oana-arbuzov

sv; country: es
https://webcompat.com/uploads/2018/6/022baf2d-ccab-4390-b737-0eaafa67ffea.jpeg



To note that this happens on Firefox Android only and it seems related a rendering issue after scrolling. Even accentuated on fast scrolling.
This seems to be caused by the same cause of bug 1469731.  And smells a bug in graphics backend for Android.
See Also: → 1469731
I can see this on my old Android phone (android 4.4.).  I highly suspect this is an APZ issue.   I guess the map image on the site is pretty heavy?
Component: Layout → Graphics
Does the blurry rendering persist, or does it go away after a couple of seconds? When I tried it, it went away after a couple of seconds, so that seems like it's just slow rendering. If it persists then it's a more severe problem because it means we aren't requesting the correct displayport.
Component: Graphics → Panning and Zooming
Flags: needinfo?(kdubost)
It goes away after a couple of seconds.
Flags: needinfo?(kdubost)

Migrating Webcompat whiteboard priorities to project flags. See bug 1547409.

Webcompat Priority: --- → ?

See bug 1547409. Migrating whiteboard priority tags to program flags.

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