The brick pattern size in a drawing is not correct in the forward view after creating a Geometry Map for the material used by the assigned Part's Rendering Properties.
In order to change the size of the brick pattern used in the forward view of a drawing, it is necessary to open the Geometry Map for that material and change the cell to one that is appropriate for the view. If no Cell is available at the correct size, a new one needs to be created.
See also: How to display a hatch or pattern in a 3D Model or 2D drawing using a Part’s assigned rendering material