BUG: unexpected cannot infer type of forward variable

[crusso]

import { debugPrint; principalOfActor } = "mo:⛔";

actor class C() = Self {
    debugPrint "So far so good!" 
}

produces

type error [M0055], cannot infer type of forward variable debugPrint

I think its happening because of the special treatment of the last declaration in a block, that determines its return type.

But it's odd that we don't consider the type of imported identifiers to be known (they should be I think).