Reproduction steps:
1. Open the attached project "Maddotroid.zip";
2. Open the Test scene;
3. Under the object "Grid", try to select Tilemap or Background object.

Expected results: The game object which type is Tilemap would be selected without any errors in the console.
Actual results: After selecting the object with Tilemap, it throws errors in the console:
"ReflectionTypeLoadException: The classes in the module cannot be loaded."

Reproduced on: 2017.2.0b1, 2017.2.0f1.
Not reproduced on 2017.3.0a1, 2017.3.0b1.