I've had the opposite experience with noise cancelling though, the APP3 feel like magic when I'm working with power tools - better than any other (passive) ear protection I've tried in Noise Cancellation mode, and still enough protection in Transparency mode that I can use my circular saw without any discomfort. I did experience a little of what you're mentioning the other day, but only when my Airpods (and head) were close to the tool. I thought it might be back EMF.
I have no complaints with my APP3 other than the forced iOS upgrade. I feel like they fit much better than the APP2, I have had far fewer incidences of them working their way out. And sound quality is a huge leap forward IMO. Best IEMs I have ever heard.