Unity 2019.3.0f6 - Trouble with physics, cubes turn left after some meters

Hi people,

These days I made a new unity empty project to do something.
I put a cube on plane and I tried to add a force (to the cube) in Z axis.
After some meters the cubes turn left, while I expect that cubes will keep going perfectly forward.

Unity 2019.3.0f6 - Physics bug?! To add a force perfectly in Z direction makes cubes turn left - YouTube (…and please ignore the spam comments under my video)

I also tried on 2019.3.8f1 unity version and it has the same trouble.
With one of my colleague we found the solution to put one non-friction physic material on one of the elements, plane or cube. However this way is too slippery, I’d like to have some friction.
I also tried with both add force and add force at position methods of rigidbody (methods that I’d like to use).

Not all at once, guys :stuck_out_tongue: