Notification handler open generic doesn't work

[rignatev]

Hi!
I was testing the notification handlers and found a problem.
When I use a notification handler open generic it doesn't work. Another notification handler is called twice instead.

Example code https://github.com/rignatev/MediatorSandbox.

Did I miss something?

[martinothamar]

Hmm this is a weird one...

code:

var svc = app.Services.GetServices<global::Mediator.INotificationHandler<global::MediatorSandbox.App.TestNotification>>().ToArray();

.NET 7:

.NET 8 preview 7:

Is there a bug in DI for .NET 7 that I've missed? The DI registration code looks correct as far as I can tell