I have never heard it explained either ...

by E Sisk, Tuesday, December 13, 2022, 11:56 (711 days ago) @ JimT

This Warning has been out there for several years now. I seem to recall reading at the time about a change in Blue Dot. Supplier? formulation? Process? Don't remember. There were theories of course, and 'Old BD' OK 'New BD'BAD, but no company verification that I am aware of.