My 07 has the exact same problem.  I recently changed the oil and
checked it a number of times after the job, never getting a decent
reading.  Finally, just trusted that I had put in the proper amount by
the capacity listing, less about a third of a quart.

I figured that if I let it sit overnight, it would read better.  Nope,
same thing.

I've had other vehicles that did this, but usually they would always
have a spot where the oil went all the way around the dipstick.  This
is the hardest stick to read I've ever had.

Frank

I went out and checked my '05 tonight.

If I twist the stick certain ways, I can duplicate the problem you
guys are seeing.   If I get it JUST right, and keep the ring parallel
to the radiator as I remove and insert, I only get the false strip
along one side.  As I was checking I remembered my early oil checks
two years ago, and remembered that it took a bit of getting used to.
<G>    The motion seems to have become automatic over time.

I had a vehicle years ago, that had a stiff, braided cable for a dip
stick, with only about a 6" half-round or  flat section at the bottom.
Don't hold me to it, but it might have been a Ford HiCube truck with a
351 V8.  That dipstick would work better in the 4.0 V6 than the one
I've got.

their auto transmission dipsticks have the same problem.