[Webkit-unassigned] [Bug 266883] Mouse Events not working in global scope when interaction started in iFrame

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=266883

Boris <boris.ablamunits at webflow.com> changed:

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--- Comment #6 from Boris <boris.ablamunits at webflow.com> ---
Hi there,

We have been experiencing similar issues to the one reported here in our application. Our application contains drag & drop functionality between a parent page and an iframe, and Safari users are impacted since version 17.2.

Here's a small reproduction of the issue:
https://codesandbox.io/p/sandbox/react-iframe-examples-forked-sz4ydd?file=%2Fsrc%2Fapp.js%3A30%2C24-30%2C35

Mouse down on the blue div and try hovering over the iframe's child while the mouse is held down.

On Safari 17.2, the mouse events in the iframe are ignored and the iframe child is not highlighted on hover.

On Chrome, the mouse events are respected and the iframe child is highlighted when it is hovered. This is the expected behaviour.

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