Reset and Doc button get's clipped when Terrain settings and paint texture (with an assigned texture) tool is active and Inspector window shrinks horizontally and

Steps to repro:
1. 1. Open attached or create a new project
2. Hierarchy > right click
3. 3D object > terrain
4. Select the terrain settings tab
5. Shrink inspector window horizontally

Actual Result:
Observe that the Reset, document button and input values gets clipped

Occurring with:
2018.3.0a6, 2018.3.0a5, 2018.2.0a4

Note:
New Terrain tools are introduced from alpha 4

Working with:
2018.2.0f2

Environment:
Windows and Mac