Toot

Written by Timo Tijhof on 2025-01-09 at 21:41

I just found the weirdest bug in Safari @webkit

When swapping the class name of two DOM nodes, it tells JavaScript that attribute changed, but the "real" DOM and painted screen don't change, permanently out of sync.

https://treasure21.timotijhof.net/play.html

• Press up twice.
• Press down once.

In Firefox/Chrome, the orange box moves. In Safari, a ghost clone is created!

Isolated test:

https://codepen.io/Krinkle/pen/WbeMPvw?editors=0010

Bug report:

https://bugs.webkit.org/show_bug.cgi?id=285705

[#]webcompat #webkit #interop2025 #browserbug

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