Skidding when the asset is locked in rotation

When I use Movement_component to randomize the assets of multiple boxes with Collider added and Rotation locked (Regid Body: Locked Rot Axis) in the property settings, the boxes slide sideways without changing their pose.

In this case, the only force explicitly set for the boxes is gravity from top to bottom, so what is the cause of the “skidding”?
What forces other than gravity are being applied to the box in the IsaacSim simulation? Please tell me.