1315254 - Scrolling the page using the swipe gesture with a pen does not work when Pointer Events is preffed on

Status: RESOLVED INVALID

(Core :: DOM: Events, defect, P3)

Description

[Alexandru Simonca [:asimonca], Release Desktop QA]

[Affected versions]:
- Nightly 52.0a1

[Affected platforms]:
- Windows 10 x64

[Steps to reproduce]:
Make sure that the build has e10s enabled and the pref "browser.tabs.remote.force-enable" and set it to "true".

1. Go to about:config and set the "dom.w3c_pointer_events.enabled" preff to "true"
2. Go to any long page that requires scrolling (e.g. www.wikipedia.org)
3. Swipe up or down to scroll the page using a stylus.

[Expected result]:
- The page scrolls according to the gesture.

[Actual result]:
- The page does not scroll. The user can use the pen only to highlight text when the Pointer Events preff is set to "true"

[Regression range]:
- This is not a regression since this is a new feature.

[Additional notes]:
- A user can use his finger to scroll the page up and down on a touchscreen device, but not the pen when Pointer Events is preffed on.

Comment 1

[Ming-Chou Shih [:stone]]

PointerEvent spec doesn't define the gestures generated from pen. Tested on Chrome 57.0.2971.0 and Edge 38.14393.0.0, swipe with pen behaves as selecting text.

Comment 2

[Ming-Chou Shih [:stone]]

Closed this bug since current behavior is as expected.