Calling BuildContentUpdate multiple times will generate a different .bundle.

Windows10 and macOS use BuildContentUpdate to generate different .bundles without modifying any resources.
If the two operating systems are windows10, the .bundle will not change.
The buildle Name is Append Hash.

Are you building for the same target platform?

Yes, the same platform Android.

It’s expected behaviour. Unity guarantees deterministic only on the same machine. See more discussions on,

So short answer, always use the same machine to process content update workflow.

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Thank you very much!