Bug 327964 EPartService's hidePart may fail when trying to hide a shared part that's in a shared container
The placeholder retrieval code in the EPartService implementation doesn't go far down deep enough and actually stops at the shared container level. This causes the placeholder of the shared part to not be found.
tests/org.eclipse.e4.ui.tests/src/org/eclipse/e4/ui/tests/application/EPartServiceTest.java
testSaveAll_NoHandlers(true, new boolean[] { true, true },
				new boolean[] { true, true });
	}
	public void testSaveAll_NoHandlers_T_TT_TF() {
		testSaveAll_NoHandlers(true, new boolean[] { true, true },
				new boolean[] { true, false });
	}
	public void testSaveAll_NoHandlers_T_TT_FT() {
		testSaveAll_NoHandlers(true, new boolean[] { true, true },
				new boolean[] { false, true });
	}
	public void testSaveAll_NoHandlers_T_TT_FF() {
		testSaveAll_NoHandlers(true, new boolean[] { true, true },
				new boolean[] { false, false });
	}
	public void testSaveAll_NoHandlers_T_TF_TT() {
		testSaveAll_NoHandlers(true, new boolean[] { true, false },
				new boolean[] { true, true });
	}
	public void testSaveAll_NoHandlers_T_TF_TF() {
		testSaveAll_NoHandlers(true, new boolean[] { true, false },
				new boolean[] { true, false });
	}
	public void testSaveAll_NoHandlers_T_TF_FT() {
		testSaveAll_NoHandlers(true, new boolean[] { true, false },
				new boolean[] { false, true });
	}
	public void testSaveAll_NoHandlers_T_TF_FF() {
		testSaveAll_NoHandlers(true, new boolean[] { true, false },
				new boolean[] { false, false });