Audio Unit in Bidule

Has anyone had any luck with this combination? My symptoms are: The editor window does not appear, instead a large (about 1000x1000 pixels) white space is displayed where the editor should have been. This applies to the demo plugin as downloaded from git sometime in August. The same plugin works fine as VST in Bidule (which supports both VST and AU) and as AU in Logic. I have tried to #define BUILD_AU_CARBON_UI 1.