The M200 has similar issues, although they're not bugs per say.
- There will always be a slight parallax between the pen tip and the cursor on the screen given the digitizer is several millimeters above the LCD itself. The workaround is in your mind: focus on the location of the pointer or pen on the screen, not the physical pen itself.
- The backlight is likely there. One edge of the M200 also gets hot. I just learn not to rest my hand there.