Originally Posted by
DarkOwnt
Hmmm. If I had to make a guess, your oil brush is probably set so that stylus pressure affects size. With that setting, how you lift the stylus has an effect on how the end of the stroke looks. I suspect holding the stylus at an angle changes how you lift it and hence the pressure which translates into the size of the brush and that tilt is not directly being used by the algorithm to change how the end of the stroke looks.
One way to verify this suspicion is to turn OFF stylus pressure control of the size of the brush. This isolates any effect of tilt on the end of each stroke. I'm not on a device right now with ArtRage to test this...