[issue44668] More differences in instance and subclass checks between typing.Union and types.Union

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:

It is easy to fix once we define the correct behavior in corner cases.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44668>
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