1505115 - Pointer lock can "jump" at various points

Status: NEW

(Core :: DOM: UI Events & Focus Handling, defect, P3)

Description

[Jasper St. Pierre]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0

Steps to reproduce:

1. Visit https://noclip.website/#mkds/pinball_course;155.55,2653.18,-3562.89,0.01,0.39,-0.92,-1.00,0.00,-0.01

2. Click and drag lots of times in the main canvas, especially in places not near the center.


Actual results:

Occassionally, the view will suddenly "jump". When this happens, I see an extremely large movementX/movementY values. This might be a race condition related to warping of the pointer to the center of the screen.


Expected results:

Normal pointer movement behavior.

Comment 1

[Timea Cernea [:tbabos][inactive]]

Hi Jasper St. Pierre,

Reproduced the issue on latest Nightly 65.0a1 (2018-11-11), latest Beta 64.0b8 (64-bit) and Release 63.0.1 on Windows 10 x64.
There are similar issues to this already reported but I am not sure if its the same as https://bugzilla.mozilla.org/show_bug.cgi?id=1420445 for example.

Will add a component for now so the development team can review this issue. Adding to Core, might also be a DOM issue. Please move it to the right component in case this is the wrong one.

Thanks for the report!