This post has NOT been accepted by the mailing list yet.
I just noticed that when one changes the opacity of a model, the opacity of its slice intersection is also modified. I think this new behavior is interesting, but not always desired. I can't find the commit that changed this.
Is there a way to link/unlink 2D and 3D opacity? As in the Segmentations module, where one has a lot of control about opacities.