Unfortunately, this problem happens constantly if it is not washed properly or very few and when it starts to happen it is inevitable, it is just ready to be recycled (I would recommend washing it at least every month if you are using it daily) and sometimes reactivate the impregnation. The next time you buy one, keep it in mind and you will be able to have it for many more years, you also have to consider how much weight and wear you gave it, sometimes you have to invest in one that has more layers (now Patagonia is doing most with three layers at a good price). I hope it helps you a little. Greetings from Berlin