I don’t know if this has happened to anyone else, but from time to time, the Isopropl alcohol I use in weathering washes or cleaning a model will leave a white haze on the underlying acrylic paint. The fix is simple: spray the model with Testor’s Dullcote, the lacquer based clear coat will neutralize the haze and it will dissapear completely. Krylon Flat won’t work as it is an enamel.
Just thought I’d share as this happened to me last night, (again!).