I think this is due to the fact that these buttons normally show a popup, which is not yet supported. I did notice sometimes the related popup seems to be opened in Developer.... (?!?!?)none of the buttons work (Company, Contacts etc)
The biggest miss (besides not really gettign it to work) for me are SplitPane support, but during the converence I spoke to Jan about it and I think he allready had some idea's how to add support for them.
Paul