Open Bug 1581407 Opened 5 years ago Updated 2 years ago

Panning can sometimes move horizontally on https://theintercept.com/ during pageload

Categories

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

Product:
Core
Component:
Panning and Zooming
Platform:
Unspecified
macOS
Type:
defect

Tracking

()

People

(Reporter: rhunt, Unassigned)

References

Details

STR

  1. Visit https://theintercept.com/ in Nightly
  2. While page is loading, quickly pan slightly down
  3. While page is loading, quickly pan up and to the right

Expect:
Scrolling should stay locked to vertical axis

Observed:
Scrolling intermittently will move in the horizontal axis as well as the vertical axis before snapping back.

This seems like an APZ issue. I've only tested on my Macbook with the trackpad. It also only seems to happen during pageload. To reproduce it multiple times, I would do a Shift-Refresh. I can take a screencast and dig into this more later.

We don't do APZ axis locking on desktop, although there's a bug on file for it.

If you're seeing axis locking in some scenarios, perhaps the trackpad driver / OS is doing that itself?

Depends on: 1467380
Priority: -- → P3
Severity: normal → S3
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