The only real fix with worn chargers is changing habits (not bending if you’re going to use the charger while using the phone)The same somewhat applies to this. If you’re still bending the wire, you might just end up bending the wire around the panda. So while panda was protecting what was inside, it was getting worn around it. I think because it was a little loose (or tight at the mouth? Idk something with the fit), it was aggravating the wire by rubbing against it