Today, when I came home, I opened a tub and I saw my male and female were lock. It looks like at least.

This is my first time seen it. I was so afraid to disturbed. I did 't take pictures or anything. When I pushed the tub to close. They started moving and not locking anymore? Are they really this easy to be disturbed? Or they were not locking?

Will they get back to lock again soon?

Thanks