I've been using Polycrylic for 7 years now without issue, foam brushes, good brushes and HVLP sprayer. All good until today. I've tried about 8 times to finish a project and regardless of the method, foam, quality brush or HVLP I get massive amounts of small bubbles. I have two cans of Poly, one maybe 8 months old and one much newer but same results with both. The only variable I can think of dawned on me at the end of the day after saying many, many bad words is that it has been raining all day. Normally I avoided those days but I just spaced it. Could this be the issue with the bubbles? Humidity? Shop is 72 degrees, clean air and freshly milled dry walnut with no prior finish other than 2 thin base coats of same Poly.