Bug 95548 Editors page not sized properly on startup
build N20050517, open preferences dialog to editors page (under General). now close and open the dialog again and note that the dialog is too short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
/*
			 * (non-Javadoc)
			 * 
			 * @see org.eclipse.core.runtime.ISafeRunnable#handleException(java.lang.Throwable)
			 */
			public void handleException(Throwable e) {
				errorOccurred = true;
				
				Policy.getLog().log(new Status(IStatus.ERROR, Policy.JFACE, 0, e.toString(), e));
				clearSelectedNode();
				String message = JFaceResources.getString("SafeRunnable.errorMessage"); 
				MessageDialog.openError(getShell(), JFaceResources.getString("Error"), message); 
			}
		});
	}
	/**
	 * Selects the page determined by <code>lastSuccessfulNode</code> in the
	 * page hierarchy.
	 */
	void selectCurrentPageAgain() {
		if (lastSuccessfulNode == null)
			return;
		getTreeViewer().setSelection(new StructuredSelection(lastSuccessfulNode));
		currentPage.setVisible(true);
	}
	/**
	 * Selects the saved item in the tree of preference pages. If it cannot do
	 * this it saves the first one.
	 */
	protected void selectSavedItem() {