I confirm this bug is related to window borders. This bug also occurs in MyPaint with one exception : When in fullscreen mode (by pressing F11) , the screen is just one big drawing area and the tablet works as expected.
I wish I had a clue for what to do to analyse the problem further. I could inspect the diffs between Jaunty and Karmic but the origin of the problem still isn't clear. It might also be the window decorator's fault (but I doubt it)
I confirm this bug is related to window borders. This bug also occurs in MyPaint with one exception : When in fullscreen mode (by pressing F11) , the screen is just one big drawing area and the tablet works as expected.
I wish I had a clue for what to do to analyse the problem further. I could inspect the diffs between Jaunty and Karmic but the origin of the problem still isn't clear. It might also be the window decorator's fault (but I doubt it)