using dot notation for operator fails if operator defined in trait is in scope

[robstoll]

minimized code

import scala.annotation.infix
import scala.annotation.alpha

trait MultiSet[T] {
  @alpha("intersection")
  def *(other: MultiSet[T]): MultiSet[T]
}

def test() = {
    val s1, s2: MultiSet[Int] = ???
    // comment out and the last statement fails with @alpha annotation "intersection" clashes with other definition is same scope
    //s1 * s2        
    //s1 * s2
    s1.*(s2)       
}

see for more details https://scastie.scala-lang.org/rnMia7lzSY2V9iLOya0w0Q

Note that it also happens if there is a top-level operator defined where the operator defined in the trait does not even need to be used (enough if it is in scope I guess)
see https://scastie.scala-lang.org/m40Jbs3nRMm3Dgb4RYRqcQ for more details.

Compilation output

@alpha annotation "foo" clashes with other definition is same scope

expectation

Should work