You're not imagining it. It's happened to my Tytus, and in the few months of owning Netossa- she went from having fine joints to can't even stand her up for more than a few minutes without her falling over. Had the same thing happen to Catra... I even bought a second one and opened it to have the same thing occur several months later. I enjoy these figures, but they are not made to last at all. Granted, not every single one of them has this happen, but it's definitely "a thing".