[Webkit-unassigned] [Bug 241911] New: Text jitters and resizes when hovering/interacting with an element

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241911

            Bug ID: 241911
           Summary: Text jitters and resizes when hovering/interacting
                    with an element
           Product: WebKit
           Version: Safari 15
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: faracik.jan at gmail.com
                CC: mmaxfield at apple.com

Created attachment 460443

  --> https://bugs.webkit.org/attachment.cgi?id=460443&action=review

A short video demoing the bug

Overview

Hello, I'm a contributor to Jenkins CI. We're facing an issue solely on Safari/WebKit where text will occasionally jitter and resize when hovering/interacting with an element, e.g. a link in the sidebar. This can be hard to reproduce sometimes but I've had success with the steps below repeatedly. This behaviour is limited to Webkit/Safari and I can't reproduce it in other browsers.

Steps to reproduce

Open a private Safari window
Navigate to https://weekly.ci.jenkins.io
Hover over elements in the sidebar and watch as they jitter/change size

Expected results

The text should stay the same size when hovering/interacting with an element.

Additional information

We use REM for font sizes, e.g. a link in the sidebar might have the font-size set to 0.9rem. 

This has occurred for as long as I can remember using Safari/Jenkins.

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