Open Bug 1502769 Opened 6 years ago Updated 3 days ago

Scrolling is janky when partial menu is sticked to the top of the viewport.

Categories

(Core :: Layout: Scrolling and Overflow, defect, P3)

Product:
Core
Component:
Layout: Scrolling and Overflow
Version:
65 Branch
Platform:
Unspecified
Android
Type:
defect

Tracking

()

Tracking Flags:
Tracking Status
firefox64 --- affected
firefox65 --- affected

People

(Reporter: karlcow, Unassigned)

References

(
URL
)

Details

This is a spin-off of https://webcompat.com/issues/19784

Steps to reproduce:

1. With Firefox Nightly on Android 
2. Go to https://www.medicinenet.com/acne/article.htm#
3. scroll toward the bottom

Expected:
Scroll is smooth and menu/page indicators are not shown at the top of the viewport

Actual:
Scroll is janky.

It has a tendency of disappearing once the devtools are opened. So something is fishy here.
Flags: webcompat?
I suspect this is more about apz than layout, but not sure.

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

Webcompat Priority: --- → ?

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

Severity: normal → S3

The MedicineNet and eMedicineHealth sites aren't scrolling poorly on my phone anymore, and their fixed headers seem to work as they do on Chrome, so we have no known webcompat breakage here anymore. Let's remove the webcompat flag for now.

Whiteboard: [webcompat]
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