[Webkit-unassigned] [Bug 215260] New: Heigh of the elements jumping on hover

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215260

            Bug ID: 215260
           Summary: Heigh of the elements jumping on hover
           Product: WebKit
           Version: Safari 13
          Hardware: Unspecified
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: roland at nextendweb.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Steps to reproduce:
1. Open https://jsfiddle.net/x093fr8t/3/
2. Move your mouse over and between the green and red elements

Expected:
The height of the green and red elements are the same all time 

What's went wrong:
The height of the green and red elements are changing and the layout starts to jumping. 


Able to reproduce in Safari Version 13.1.2 (15609.3.5.1.3) and Technology Preview Release 111 (Safari 14.0, WebKit 15610.1.23.1.2)

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