Question about the Rhino 6 BETA work window appearance and settings

Control points on:
You can turn that off with these settings:

Rhino Options > Mouse > Selecting > Allow selecting objects with points on

and

Rhino Options > Mouse > Selecting > Turn on control points when selecting a curve, light or annotation

Edge thickness:
I am supposing that you have those set to 1 in the display mode. For the time being, you can use the following test command:

testWireThicknessScale

See this thread: