Hi,
I was playing around with the new PBR materials and the UV texture editor and I noticed when you select a face in the UV texture space to align it, it doesn’t properly highlight which face it is in the 3d model.
In Rhino 6 it is highlighted using the highlight color (yellow by default), in Rhino 7 it is a faint black outline, which is not visible if you have surface edges/iso curves activated.