Wierd hazing issue?

[Jonesey]

Yesterday I detailed a black BMW 645Ci. Process was wash, clay bar, then Microfibre system. I then put on a layer of #26, followed by a quick wipedown with UQW. After taking some pictures in the sun, I moved the car back inside to finish vacuuming. After about twenty minutes, the hood and trunk looked as though I had forgot to remove the UQW. A quick swipe with a towel fixed that.

Problem is it kept coming back!!! The only thing I did differently than other cars was using #26, to get the nice carnauba glow, instead of #21.

Could the #26 and UQW not be getting along?

Glenn