Scaladoc should not expand the prefix of a dependent type

[scabug]

Given a source file:

package myPackage
object TypeRefinementScalaDoc {
  trait Base {
    type T1
    type T2
    type Out <: (T1, T2)
  }
  type Alias1 = Base {
    type T1 <: AnyVal
  }
  type Alias2 = Alias1 {
    type T1 = Int
    type T2 = String
  }

  def out: Alias2#Out = ???
}

I expect the type of out method in the generated HTML is Alias2#Out, the same as the source file. Unfortunately it is (Alias1 \{ ... /* 2 definitions in type refinement */ \})#Out, a partially expanded type alias, which makes little sense to readers.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-10017?orig=1
Reporter: @Atry
Affected Versions: 2.10.6, 2.11.8