ComponentListener gets installed twice per Component

[Sciss]

From scala/bug#4903

scala.swing.Component's onFirstSubscribe calls super.onFirstSubscribe first, which adds a ComponentListener, then adds another one on its own. This is clearly not intended behavior.

Bye
Christoph

• Imported From: https://issues.scala-lang.org/browse/SI-4903?orig=1
• Reporter: Christoph Radig (cradig)
• Affected Versions: 2.9.1