Object dropped/falling dropping can move .

Hey, here is my problem
I have a block (rigidbody mass 200 , player cant move it normally) that i can hold but when i drop those block if it hit somethink or the player and i push it it can move like the block loose the mass

https://gyazo.com/a6f2b46461557620c2906ae5d3562012

I hope someonne can help i tryed some forum but didnt find a solution ATM.
Thanks
Regards

Not enough info. Link doesn’t work and most won’t click on links anyways.

  1. How is it held? Joints, parenting; are you changing useGravity, isKinematic?
  2. What do you mean by push it? The player bumps into it? If so, what kind of controller are you using for the player?