Objects that aren't parented keep on following each other. It was happening in 2.93 and is happening in 3.0

Question

This is a gif that shows what's happening. Also, they are not parented only the gear is parented to something else.

Answer 1

You have proportional editing turned on. Click this button at the top of the 3D viewport to turn it off:

Alternatively, you can use the keyboard shortcut O to toggle it on and off.