[BUG] Black dots appear on material

[僕の名前 (仮)]

If material have normal map and I enable tri-planar projection, black dots appear.
After I disable NM channel for that material, they disappear.

[renderbydavid]

bump

[zelfit]

Check your normal map. Sometimes black dots appear when you have very low values on Blue channel. Try adjusting only blue channel with Levels for example and see if it makes difference