Bug 42109 Go to Previous target not acting like Go to Next target
Go to Previous target is searching through unselected targets such as warnings. The behavior is dissimilar from Go to Next target whose action is reflecting the selection of the drop down to configure targets. The checkmarks for the two are the same, but the behavior differs.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
* @param offset the offset inside of the requested element
	 * @param reconcile <code>true</code> if editor input should be reconciled in advance
	 * @return the most narrow java element
	 * @since 3.0
	 */
	protected IJavaElement getElementAt(int offset, boolean reconcile) {
		return getElementAt(offset);
	}
	
	/*
	 * @see org.eclipse.ui.texteditor.ExtendedTextEditor#createChangeHover()
	 */
	protected LineChangeHover createChangeHover() {
		return new JavaChangeHover(IJavaPartitions.JAVA_PARTITIONING);
	}
	protected boolean isPrefQuickDiffAlwaysOn() {
		return false; 
	}
	/*
	 * @see org.eclipse.ui.texteditor.AbstractTextEditor#createNavigationActions()
	 */
	protected void createNavigationActions() {
		super.createNavigationActions();
		final StyledText textWidget= getSourceViewer().getTextWidget();
		IAction action= new SmartLineStartAction(textWidget, false);
		action.setActionDefinitionId(ITextEditorActionDefinitionIds.LINE_START);
		setAction(ITextEditorActionDefinitionIds.LINE_START, action);
		action= new SmartLineStartAction(textWidget, true);
		action.setActionDefinitionId(ITextEditorActionDefinitionIds.SELECT_LINE_START);
		setAction(ITextEditorActionDefinitionIds.SELECT_LINE_START, action);