Terrain Brush Problem

I guess this question/problem is still not answered. If you look carefully at the picture (problem.jpg) you will see the output brush is square and large despite the low settings. Also (more importantly) the "brush" selected is a "round" one and not a square one. This happens only on the "Paint Detail" section (as of my experience up to 2016) thus something is wrong here which the workers at Unity do need to look into as terrain is a very important feature and as such needs functional tools to sculpt with.