Steps to repro:

1. Open attached project and 't1' scene;
2. Open Frame Debugger (Window -> Frame Debugger);
3. Open Profiler (Window -> Profiler);
4. Enter Play mode;
5. In Frame Debugger window click 'Enable' button;
6. In Project folder select 'New Material' material;
7. Observe draw calls is Profiler and Shadows.RenderJobDir calls in Profiler.

Expected result:
There are only Static batch calls fo Cube shadows (see attached expected.png screenshot).

Actual result:
Unneeded individual draw calls for Cube mesh are shown apart from Static Batch shadow calls. See attached video and actual.png screenshot.

Workaround is to select 'New Material 2' in Project folder and observe that only static batch calls are now issued.

Notes:
- Reproducible in 2017.1.0b6, 5.6.0p1, 5.5.2p1;
- Reproducible on OSX 10.12.3 and Windows 10;
- Reproducible only in Editor; not reproducible in Standalone Player.