netbeans-trunk-nightly-200909221401-javafx-full.zip 

  Product Version         = NetBeans IDE Dev (Build 200909221401) (#038a2843d59a)
  Operating System        = Windows XP version 5.1 running on x86
  Java; VM; Vendor        = 1.6.0_15; Java HotSpot(TM) Client VM 14.1-b02; Sun Microsystems Inc.


Steps to reproduce:

- Create 'Main' JavaFX file
- Copy to the editor:
------------------------------------
function a (){ 
    println("a");
}

function b(){ 
    a();
}

b(); 
------------------------------------

- Set a breakpoint to the 'b()' call on the last line 
- Start debugging
 The debugger stops on the last line
- Press Step Into (<F7>)
 Debugger goes to the 'b' function body
- Press Step Out (<Ctrl + F7>)
  The debugger goes to the 'a' function body (Step in) not to the last line