When setting the JAX-RS Facet on a dynamic web project, a popup window requires to choose the JAX-RS implementation library for the project, and optionally to specify the servlet class name to update the web.xml deployment descriptor accordingly. When choosing 'Disable library configuration' or 'Pure JEE6 implementation', the 'Servlet Information' panel is not disabled as expected. This is related to https://bugs.eclipse.org/bugs/show_bug.cgi?id=338898