V5 for you shows quads after cen was used, for some reason for me it doesnt.
here are my settings, same as yours except for universal.
If I carefully move the cursor 1 pixel at a time zoomed right in then momentarily as I am on the exact spot I see mid, quad appears in the cursor tips box but the snap is not there, no magnetic pull, not the quad snap one is so used to, not like if I start with quad. so weak you miss it,.
I have opened rhino V4 and tried cen then quad and its there ok on V4, a good snap feel, says quad on its own.