CA makes both laser color decals and unused stamps "bleed" in my shop, too. The problem is not as pronounced on ink jet decals, but there is some "bleed".
I have found that a coat of clear gloss Modge Podge applied 24 hours before thin CA with no rubbing(lathe running, no rubbing, NO ACCELERATOR) makes an acceptable product. I have ordered PPA, but have not used it as yet.
I hope this helps!