Please help me out: what do you mean by using the word "supposedly" ?
Are you trying to say that this problem does not exist, or that the people who are providers of the pen technology dont understand the most basic limitiation of its product?
Please take 5 minutes of your most valuable professional time, click the pen button once and try to draw a slow diagonal line on your sp3 (I suppose you have one right?) feel free to use a ruler, to make sure the line drawn line is straight.
then take a look at the result, doubleclick the pen button and create a snapshot of what you see, you will be suprised...
Please take then 5 more minutes of your most valuable professional time and write an email to n-trig support including the screencapture and asking if this behaviour is normal.
I must say I am indeed very surprised that no one at Microsoft or around the most valuable professionals has ever done that, let alone the missing communication around the issue
I feel like playing the telephone game here....