Hi,  I haven't as yet processed many broadband projects and may not have been attentive enough during processing to notice what you are pointing out. I'd welcome it if you could list any targets/job numbers where that is clearly an issue. If I haven't processed any of them to look at what my results show, then I can then choose one so as to replicate it. I probably won't have any solution and I'm sure you've tried yourself to find one, but it's worth getting further confirmation on this.  Cheers,  Ray 

Attached is the red channel of vdb152 with minimal processing.  The stars have more aberration on the top right part (pass the diagonal line).  Strangely, I did not see this for other channels.  The second pic is a processed version of LHaRGB image.  I removed the supposed purple fringes of the stars of top right part of the image by inverting and SCNR with Green, so the stars are now golden

Glad you managed to remove the fringing and letting us know.