Bug 319169 [UI] active parts in Detached windows prevent activating a part in the main window
Start with a fresh WS Detach the Outline view using DnD Now you can no longer activate any part in the main window (i.e. Package Explorer). The cause seems to be that the 'rootContainer' has become the DW's MTrimmedWindow rather than the DW's containing MPerspective. This causes the PartService's 'activate' to fail the 'isInContainer()' test...
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
}
	public void testSavePart_YesFalseFalseFalse() {
		testSavePart(ISaveHandler.Save.YES, false, false, false);
	}
	public void testSavePart_NoTrueTrueTrue() {
		testSavePart(ISaveHandler.Save.NO, true, true, true);
	}
	public void testSavePart_NoTrueTrueFalse() {
		testSavePart(ISaveHandler.Save.NO, true, true, false);
	}
	public void testSavePart_NoTrueFalseTrue() {
		testSavePart(ISaveHandler.Save.NO, true, false, true);
	}
	public void testSavePart_NoTrueFalseFalse() {
		testSavePart(ISaveHandler.Save.NO, true, false, false);
	}
	public void testSavePart_NoFalseTrueTrue() {
		testSavePart(ISaveHandler.Save.NO, false, true, true);
	}
	public void testSavePart_NoFalseTrueFalse() {
		testSavePart(ISaveHandler.Save.NO, false, true, false);
	}
	public void testSavePart_NoFalseFalseTrue() {
		testSavePart(ISaveHandler.Save.NO, false, false, true);
	}
	public void testSavePart_NoFalseFalseFalse() {
		testSavePart(ISaveHandler.Save.NO, false, false, false);
	}
	public void testSavePart_CancelTrueTrueTrue() {
		testSavePart(ISaveHandler.Save.CANCEL, true, true, true);