Ask HN: What's Going on with Resealable Packaging?

It seems like easily 50% of resealable packaging that I buy now is breaking. Usually it's that the area where the mechanism is glued to the bag separates from the bag so in an instant it ceases to be resealable. As more and more products comes in packaging like this (which would otherwise be convenient) it becomes increasingly frustrating. So much so that I personally have started returning the product to the grocery store regardless of what it is.

Does anybody know what has changed recently? Have they started using some kind of cheaper glue or less amounts of glue?