Cormac Redmond

> Another suspected issue (not really related to this PR), close request handlers are not called when using EXTENDED. E.g.: > > ``` > stage.setOnCloseRequest(event -> { > System.out.println("Never called...");;...

> Good catch, a non-modal owned window also can't be iconified. I've added code and tests for this scenario. Looks good, can't find anymore issues...

> I've filed another ticket for that: [JDK-8359763](https://bugs.openjdk.org/browse/JDK-8359763). Just curious, why a separate bug for this instead of fixing in this PR and avoiding the headaches/conversations of more PRs --...

I have found another bug/issue, which is again related to wrapping a root node in a StackPane (something that is common in, for example, ControlsFx). Although the observed behaviour is...

FYI to any reviewer: I've been using this branch's EXTENDED/HeaderBar extensively now without any new issues...

> I think this fix should make the 25 release if possible, as it would be unfortunate to preview the new feature with distracting bugs included. The fix is also...