It will continue as long as its coming from china. They have started to cut corners and make it cheaper and not as quality product. I have TP from China and it was years ago and still sealed but I compared it to a recent batch a friend has and they look different and his does not dissolve as well in solvent.
This is getting more and more common and its a crap shoot to see if you even get quality powders. Its disturbing to see that powders are not pure or at least 95% and some don't even know what to look for so they don't even know if they got what they ordered..