Bug 56818 [PropertiesView] Clicking on Advanced Properties toggle when categories are collapsed removes the + next to the category
Clicking on Advanced Properties toggle when categories are collapsed removes the plus sign (+) next to the category and it can no longer be expanded. To reproduce: 1.)Open the Properties view. 2.)Have Show Categories turned on, and Show Advanced Properties turned off. 3.)Collapse all open categories. 4.)Click the Show Advanced Properties button. 5.)Note the plus sign goes away and the categories can no longer be expanded. You need to click the Show Advanced Properties button off to see the plus sign again.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertySheetViewer.java
}
	}
	/**
	 * Sets the message to be displayed in the status line. This message is
	 * displayed when there is no error message.
	 * 
	 * @param message
	 *            the message to be displayed, or <code>null</code>
	 */
	private void setMessage(String message) {
		
		if (statusLineManager != null)
			statusLineManager.setMessage(message);
	}
	/**
	 * Sets the root entry for this property sheet viewer. The root entry is not
	 * visible in the viewer.
	 * 
	 * @param root
	 *            the root entry
	 */
	public void setRootEntry(IPropertySheetEntry root) {
		
		if (rootEntry != null)
			rootEntry.removePropertySheetEntryListener(entryListener);
		rootEntry = root;
		
		tableTree.setData(rootEntry);