Welcome to AC.
Check the surface material of the object. In archicad each Surface can have a Color, a Texture Image or a Pattern. What you are seeing is the pattern of the surface. To change it there are 2 possible places one in the Object settings or another in the Surface Overrides.
Let me know when you stop missing it
Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
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