Steps to reproduce:

1. Open Unity Editor;
2. Create new project and scene;
3. Add any gameobject to the scene (e.g. Cube or Sphere);
4. Open Profiler window (Window -> Profiler);
5. Click on Profile Editor tab;
6. In the Hierarchy view drag any gameobject by using mouse (should be done without closing Profiler window);
7. Observe the console.

Actual result:
"m_EnabledCount == 0" and "TimeToNanoseconds (m_LastEnabledTime) == 0" errors appear in the console (see attached gif video and screenshot).

This issue reproduces only on Mac OSX.

Note:
Also reproducible on:
- 4.6.8p3 (74e15bac63b1);
- 5.2.1f1 (44735ea161b3);