After a first 3D loading, the volume is well displayed and I want to use the mouse to rotate the 3D view.
I do not know why but the first click-and-drag event with the mouse moves one of the ROI side (I control one of the colored points of my ROI) even if my click is not over the node. After releasing the left button, the next click-and-drag allows me to rotate the 3D view.
Is there any function to call in the slicerrc file to avoid the phenomenum?
I agree it can be inconvenient that the ROI widget grabs all the mouse events, but for now I think you just need to be aware of it, and either turn it off when not using it or maybe zoom out a bit with the mouse wheel before rotating.