Bug 49005 Preference page doesn't get enough space to draw itself
200312162000 There are cases where the preference dialog doesn't allocate enough space for a page to draw itself. The width of the page seems to be a few pixels short.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
messageLabel.setFont(JFaceResources.getBannerFont());
		final IPropertyChangeListener fontListener = new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				if (JFaceResources.BANNER_FONT.equals(event.getProperty()))
					updateMessage();
				if (JFaceResources.DIALOG_FONT.equals(event.getProperty())) {
					updateMessage();
					Font dialogFont = JFaceResources.getDialogFont();
					updateTreeFont(dialogFont);
					Control[] children = ((Composite) buttonBar).getChildren();
					for (int i = 0; i < children.length; i++)
						children[i].setFont(dialogFont);
				}
			}
		};
		messageLabel.addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent event) {
				JFaceResources.getFontRegistry().removeListener(fontListener);
			}
		});
		JFaceResources.getFontRegistry().addListener(fontListener);
		GridData gd = new GridData(GridData.FILL_BOTH);
		messageLabel.setLayoutData(gd);
		
		titleImage = new Label(titleArea, SWT.LEFT);
		titleImage.setBackground(background);
		titleImage.setImage(JFaceResources.getImage(PREF_DLG_TITLE_IMG));
		gd = new GridData();
		gd.horizontalAlignment = GridData.END;
		titleImage.setLayoutData(gd);