They do the same on my Stingray 5, too.
FWIW, my last four string changes on my Stingray were to Pressurewounds, then Chromes, Pressurewounds again, and back to Chromes. I do like how the Pressurewounds sounded on it but I felt they were not quite as stiff feeling as I prefer. But I also liked their sound enough to give them a second chance. I had the second set of PWs on it for about a year and eventually reached the same conclusion - very happy with the tone, the relative stiffness wasn't bad, but I prefer a slightly stiffer feeling string. I prefer the Chromes (or nickel Lo Riders for roundwounds)
FWIW 2 - The Chromes also sounded fantastic on my G&L L-2500. They tamed the high end on that monster just enough to suit me so it sounded as aggressive as I wanted it to,, but without the harshness. I then put GHS Precision Flats on it but, after playing on them for about six months, I just bought another set of Chromes up put on it.
Lots of people love EB flats and EB Cobalt flats on their Stingrays, as you can tell by the posts in this thread. I haven't tried either of those yet. But I did try Slinkys and Cobalts on my Stingray (and other basses) a few times. I got no string life from them and they had a looser feel them I like, so I haven't been tempted to try the flatwound version of either. YMMV, of course.