My pawn is containing a brick, which I can move using Z and S. My brick is affected by physics(and so, gravity), but when it encounters a small obstacle, the brick rotates, but not the pawn (Value of Get Control Rotation stays still). How can I manage to get the rotation of the brick affect the pawn?
You need a capsule collision or the static mesh it self to be the root component on your blueprint, otherwise the object will only rotate on its local offset.
How can I set the static mesh to be the root component of the pawn?
And I think using a capsule collision for a brick ain’t be something really fancy I guess 
Just Drag and Drop the Static Mesh above the root element.