Bug 73027 [Dialogs] Buttons are too high
I20040831 Buttons are no longer oval but have a rounded rectangle shape (see first screenshot). The second screenshot shows how buttons using the small system font should look like.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
}
    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.window.Window#create()
     */
    public void create() {
        super.create();
        applyDialogFont(buttonBar);
    }
    /**
     * Get the IDialogBlockedHandler to be used by WizardDialogs and
     * ModalContexts.
     * 
     * @return Returns the blockedHandler.
     */
    public static IDialogBlockedHandler getBlockedHandler() {
        return blockedHandler;
    }
    /**
     * Set the IDialogBlockedHandler to be used by WizardDialogs and
     * ModalContexts.
     * 
     * @param blockedHandler
     *            The blockedHandler for the dialogs.
     */
    public static void setBlockedHandler(IDialogBlockedHandler blockedHandler) {
        Dialog.blockedHandler = blockedHandler;
    }
}