Bug report
Code snippet that reproduces the problem
https://phpstan.org/r/7bf13ee0-c86c-448a-8d5b-2e59cb95d5ac
https://phpstan.org/r/a9895ddd-6838-4652-9c02-32d9f503bd21
The second code sample reports an always-true error, which we can see is bogus here: https://3v4l.org/gvWt5
However, if using a @template T of NamedTag and @param class-string<T>, the error goes away.
Expected output
Both samples should have no errors.