Thanks for this interesting thread chaps; I just wanted to say that I had a similar experience with dragging pixmaps being messed up by stylesheets (I gave up on the fancy stuff in the end and just settled for the standard little drag box). If I remember correctly, I also had problems displaying tooltips for widgets which had stylesheets. There was a note somewhere in the documentation warning against mixing palette and stylesheet effects which is fair enough I suppose but stylesheets on their own cause unexpected results sometimes. I try to avoid them now.