Here is the situation: I work in network view; create any object (grid, curve, etc.) and I add group sop. Viewport doesn't show grouped elements/geometry in color (yellow). Same example in old version works fine. It's not only me but few other people I checked with are having the same problem. Same example in old version works fine. It's 7.0.231 build.
As I said, it works fine with 6.1.208 for example.