Some other folks have had bleeding issues with ink and the
JPSS, and backing off the saturation fixed nearly everyone problems except for a very, very few, like 2, who have red bleeding issues with
JPSS, but not with pigment ink, I believe. What kind of fabric are you using?
Red is the color sited as problematic, and purple is loaded with red, so that to me is why you see the purple rising as a problem.
The first thing would be to try to reduce the ink saturation. Either in the color settings, or by using a text or normal mode instead of a photo mode. Also, make sure you are using a plain paper setting.
The ink sits on top of the paper, so too much ink is not good and actually is wasteful.