I am having the same problem my setup:
Asus Laptop + cintiq 13HD as monitors 1&2 in mode: duplicate display on 1 and 2, resolution: 1920x1080 landscape flipped
In addition I have an extra monitor setup using a usb-hdmi port as an extended display vertically. resolution 1920x1080 landscape
So currently I have 3 different displays: my laptop, cintiq, and an extra monitor, whenever I draw with the brush tool it displaces the mark up and to the right of where my pen actually is.
I have searched the forum for a solution, but nothing has helped so far including updating the latest cintiq driver and using the most up to date version of flash cc. the brush in photoshop works just fine.
No answer from Adobe and no movement on this in months except vague promises of "it's fixed in latest patch"
Time to learn a new animation tool I guess?
I've been using a different program for my animations, I would love to use Flash but I can't because of this problem...
Do you guys have any updates for us?
Out of curiosity, what other software are you using.
I'm using Flash on a Cintiq Companion. The two are no longer compatible and haven't been for over 6 months. "We're working on it" isn't doing it for me anymore unfortunately.