GH Maxibloom formula change?

Hello all, wondering if anyone using maxibloom has noticed a difference recently with their ph stability. Toward the end of my last grow I ordered another 2.2 pound bag of MB. Upon receiving, I noticed that something was slightly different about the packaging. It looked somehow more colorful and the dimensions seemed different in a very subtle way. Thinking I was just too high and dismissing it as nonsense, I sat it under my workbench and forgot all about the discrepancy. Until today. Having ran multiple strains last run, I have some late finishers which I've been having slight problems with for the last couple weeks. Ever since I opened the new package of MB, my plants have been overall unhappy. My reservoir would no longer maintain a stable pH even overnight. So I switched to some old bottles of H&G and 4 days later my plants are bouncing back hard an my reservoir has just now crept up .2 pH points. The new batch is much more powder like, whereas the old bag I had was sort of gritty. Sorry for the novel... Is anybody else dealing with this? Here's a pic to show the package difference

From what I hear...new bag, they lightened up on the satiny red dye and no other changes. My ph still holds ok and I haven’t noticed any difference....so take that with a grain of salt. Maybe there was a reformulation.