Dipstick sitting on the threads but really it doesn't matter a lot, as long as you can see oil on the stick, there's lots in there.
As for can it affect running? Yes it can because expelled oil can clog the stepper and gum up the throttlebodies. Does it accumulate? Yes, if excess is pumped into the airbox the crap that doesn't get drawn through the TB's will settle in the airbox and run into the two drains, (Principally the forward one.) which terminate, if the hoses are in place and plugged, under the RH footrest hanger plate.