Inaccurate curves in Illustrator CC?

Just upgraded to cc & noticed that curved tapered paths are not smooth. Thought it might be just a screen rep issue so outlined the path. However, the inaccuracy was confirmed as the outlined version was riddled with points.
Is this a known bug or does anyone know how to rectify this with a setting change?
See screen grabs below.

Hi Monika
Thanks for your reply.
So This is a known bug in the programme?
I tested it by going back to CS5.5 & there were no issues.
In that case I will have to use the old version of illustrator until it is fixed which is rather annoying & will be tricky to install on the new Macbook as it has no dvd drive.
Is there a url which lists all the known bugs?
Do you know Adobe looking into this as it is pretty major?

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