I discovered that the <category> child element of <project-facet> has
been replaced by <member category="MYID"/>. I also declared a category
with an id of "MYID" as part of the core.facets extension point. As
soon as I do all this, my facet no longer appears in the UI. I comment
out the <member> element and it appears again. Is there a bug in 3.0M4
here, has the usage changed since this article was written, or did I
make a mistake here?