Yes, but have you provided a real control? Buy a good bag of Build-A-Soil and put a few in there, with no nutes. See if it follows. 
Manufacturers can change formulas, inventory/supply issues, manufacturer operator errors, bad upstream chemicals, anything can happen. Combine multiple products and it gets real complex fast.
I like simple.
I’ve throw a few out on the balcony and seen the same issues. So I’ve seen it in soil, rockwool, dwc indoor and out. I’ve been using the same bags of jacks for the last 2-3yrs so there is no change there. Meters all calibrated monthly(bluelab ph controller and guardian)… it’s 100% a virus. I really wish you were correct. It would make life so much easier right now!
Anyone used boomfiya.com ? I got my eyes on that white truffle clone