I can't see selection lines in SELECT AND MASK
Using iMac, Sierra 10.12 and PS 2017.1.1
When I open select and mask and select the QUICK SELECTION TOOL and drag with it, I can not see selection lines anywhere, regardless of the transparency selected. I use the onion skin mode.
I can see the changes in the tiny icon in the top right, VIEW.
I am certain that I am doing something fundamentally wrong
but what???

