Bug 276520 [PropertiesView] [Views] Properties Views interfere with each other
Found in I20090514-2000. Open two property views and put them in different stacks (both visible) Select a resource in the explorer, they both populate Click on one of them and the other goes blank Click on the blank one and now they're both blank Is the Property View itself acting as a property provider?
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheet.java
super();
        pinPropertySheetAction = new PinPropertySheetAction();
    }
    /* (non-Javadoc)
     * Method declared on PageBookView.
     * Returns the default property sheet page.
     */
    protected IPage createDefaultPage(PageBook book) {
        IPageBookViewPage page = (IPageBookViewPage) ViewsPlugin.getAdapter(this,
                IPropertySheetPage.class, false);
        if(page == null) {
        	page = new PropertySheetPage();
        }
        initPage(page);
        page.createControl(book);
        return page;
    }
	/**
     * The <code>PropertySheet</code> implementation of this <code>IWorkbenchPart</code>
     * method creates a <code>PageBook</code> control with its default page showing.
     */
    public void createPartControl(Composite parent) {
        super.createPartControl(parent);
         
        pinPropertySheetAction.addPropertyChangeListener(new IPropertyChangeListener(){
			public void propertyChange(PropertyChangeEvent event) {
				if (IAction.CHECKED.equals(event.getProperty())) {
					updateContentDescription();
				}
			}