1445972 - Scroll clicking context menus, section titles and buttons will wrongly trigger both autoscroll and the clicked element's action

Status: NEW

(Firefox :: New Tab Page, defect, P3)

Description

[Ciprian Muresan [:cmuresan], Formerly of Ecosystem QA - please needinfo @mcoman for things regarding the team]

Attachment: titles, menus and buttons wrongly clickable with scroll click.gif

[Affected versions]:
- Nightly 61.0a1 Build ID 20180315100042
- Beta 60
- Release 59

[Affected Platforms]:
- All Windows
- All Mac
- All Linux

[Prerequisites]:
- Have a profile with a lot of history so that all of the sections are populated
- Have a mouse with a scroll wheel 

[Steps to reproduce]:
1. Open the browser with the profile from prerequisites.
2. Scroll click one of the tile's context menu button and observe the behavior.

[Expected results]:
- The context menu appears.
OR
- Page autoscroll starts.

[Actual results]:
- Both context menu and autoscroll appear.

[Notes]:
- This issue is also reproducible for cards and section context menus, section titles and preferences button.
- This issue is reproducible on Linux only with the "general.autoScroll" pref set to true.
- Attached a screen recording of the issue.

Comment 1

[Adrian Florinescu [:aflorinescu]]

Still reproducible (Win10 / 91.0a1 20210704213917), setting S3 since it's not critical, but still annoying.