Randomly some prefab instances have Character controller misaligned

Hi! I do a scene where units spawn above the earth. They get grounded and the game can begin. But sometimes part of the same prefab instances get half height deep in terrain. I watched the scene and instances appeared to have character controller collider shiffted. See the screenshot. http://screenpresso.com/=QSSye

I cant understand how can that happen.

• Prefab is the same

• Method to spawn is the same

• Logs look the same way for all instances

• Collider position relative to the character IS THE SAME in the inspector for all instances, whether thy have that shift or not. Units are ~1.80 height and the character controller collider center is at 0.95.

Any help appreciated