1719909 - Scroll and change the tab immediately causes zoom out

Status: UNCONFIRMED

(Core :: Graphics, defect, P3)

Description

[Deepak]

Attachment: firefox_bug (online-video-cutter.com).mp4

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36

Steps to reproduce:

1. Open 2 websites in different tabs. Say code.org and youtube.com
2. Scroll code.org (as if you want to go to the footer, I am scrolling a bit with both my fingers on a laptop trackpad and letting it scroll to the bottom of the page) and immediately switch the tab to youtube.com.

Actual results:

Both the website in both the tabs zooms out.

Expected results:

Zoom out should not happen.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Graphics' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Timothy Nikkel (:tnikkel)]

Sounds like the momentum scroll events are getting combined with the ctrl from the ctrl tab, which causes the zoom.