Possibly faulty unit

Let me start off by saying that I loved this product. I recommend it to my parent, siblings, and friends. The most recent unit I got might just be an outlier because it's thread fell apart after only a month and a half of use as shown in the pictures below, but I am skeptical if the quality control has possibly gone down. I'll consider giving a another unit a try to see if it also experiences a similar issue.

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