Apple's "Preview" app cannot be selected for white- or blacklisting

[mschmidm]

Hey there, really nice app!

I wanted to block everything but the native MacOS PDF viewer "Preview". Unfortunately, I cannot select it in the app / website picker. "com.apple.Preview" does not work, too.

So I thought, well ok, maybe native MacOS apps cannot be blocked, but choosing "Whole device" does block it, so there seems to be a way.

Thanks!