To reproduce:
1. Open the attached project;
2. In the Assets folder, double-click the "_ExampleMeshSet";
3. Select some tile, under "Selected Tile" - click-drag to rotate all meshes;
4. Open "TilesetEditor.cs" script (Assets > TileVox > Editor > TilesetEditor.cs);
5. Change a Scale of the Preview Matrix (line 683);
6. See how meshes change in the Editor.

Expected result: the scale of meshes should change, tiles should rotate about their center.
Actual result: scale matrix in PreviewRenderUnility camera is ignored in the Editor, tiles are not rotating about their center.

Reproduced on: 2017.1.0b2, 2017.1.0p1, 2017.2.0b4.
Not reproduced on: 5.6.2p4, 2017.1.0b1.
Regression introduced in: 2017.1.0b2.