Hi @jinzhu,
Could you please, have a look to this PR.
This branch works well for me as the master doesn't.

Best Regards

I don't believe the problem is with time.Time but with the handling of private fields in general. It's impossible to deep-copy private fields using reflection, but the deep-copy logic should at least do a shallow copy of all public fields, which would make time.Time and other shallow-copyable structs with private members behave correctly.

I don't believe the problem is with time.Time but with the handling of private fields in general.

yes, I agree the problem is caused by unexported fields.
Since you have provided a general solution, I will just close this one.
Good job! @BatmanAoD

Hey everyone,
I don't think this issue is fixed @jinzhu
see the following code https://go.dev/play/p/Lrcq_MhsH7t
using the latest version.
This is only happening when using deep copy option.

@maeglindeveloper That example works now; I suspect it failed originally because the fix hadn't been included in a release tag yet.