Reopen: #15471 It happens in `deepCyclicCopyReplaceable` for `blob[Symbol(impl)]._globalObject.globalThis.process.channel.fd` <img width="751" alt="Image" src="https://github.com/user-attachments/assets/772e1d41-fb8a-4ed4-809e-8690e154e14a" /> ### Solution: Exclude `Window` object from copy