Task builder state machine not visible in decompilers

[kerams]

Given

let c () = task {
    printfn "yup"
}

I can see the state machine struct in Sharplab, but dnSpy, ILSpy (and I think dotPeek too, last I checked) refuse to show it.

It's clickable, but nothing happens, and I can't find the struct anywhere in the assembly explorer panel either. Any clue what's going on? Is it a problem with assembly metadata?

[kerams]

Turns out there's a checkbox that needs to be ticked. In dnSpyEx it's Options->Decompiler->Show hidden compiler generated types and methods.

[abelbraaksma]

Likewise, dotPeek has a setting for this, and probably ILSpy as well.