To clarify
you see in MM3 and MM4 until build 1342 the behavior was as expected ,
mouse over Node change font color,
click on it shows active background,
Click somewhere else shows inactive background.
In build 1343 the behavior changes,
doesn't matter if you activate FullRowSelect (new MM4 features )or not.
maybe it have some to do that win system overwrite some Skin objects in this build!
somehow i like this behavior,
but please make it skinable!!!