[Webkit-unassigned] [Bug 222228] postMessage changes prototype of basic types

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=222228

--- Comment #2 from Stefan Sechelmann <stefan at sechel.de> ---
Here is a demo: https://codepen.io/sechel/pen/xxRLPKp
Check the dev console.

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