Bug 300545 [Viewers] New column scrolling breaks on first cell selection if you have scrolled the table
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TreeViewerFocusCellManager.java
private static final CellNavigationStrategy TREE_NAVIGATE = new CellNavigationStrategy() {
		public void collapse(ColumnViewer viewer, ViewerCell cellToCollapse,
				Event event) {
			if (cellToCollapse != null) {
				((TreeItem) cellToCollapse.getItem()).setExpanded(false);
			}
		}
		public void expand(ColumnViewer viewer, ViewerCell cellToExpand,