the solution is evidently working on RichFaces Showcase hosting,
which is currently running on Mojarra 2.0.3-b03 (JBAS 7.0).
Have you placed rich:editor to h:form tag?
Could you try to define a4j:queue before the rich:editor?
rich:editor is already inside a h:form, I've defined a4j:queue, but still the same, but i noticed with chrome console that when i use Mojarra 2.0.3 and start typing inside rich:editor too many requests get fired, with MyFaces 2.0.1 only one request get fired after 5 seconds (because of requestDelay="5000"), PFA.
My environment is :
JBoss 6 final
JSF 2 (MyFaces 2.0, Mojarra(2.0.8,2.1.6))
RichFaces 4.1 Final.