As any cuber knows, a typical 3x3x3 shouldn't be able to turn corners in place, but now mine is loose enough to do so almost easily.
Yes I twisted it back properly, and yes the cube still works as intended, but it's starting to fall apart. Guess I'm due for a new cube soon...
Looks like this cube predates "squared-off corners", which are pretty effective at preventing accidental corner twists.
That wasn't exactly an accidental corner twist, I deliberately tried that. Still a cheap shit cube, but it wouldn't have done that accidentally.