Reproduction steps(GIF attached):
1. Open attached project.
2. Select "Main camera" game object.
3. Go to "GameObject > Align View To Selected".
- "Cube" game object gets black.
4. Select "Cube(1)" game object.
5. Toggle off "Mesh Renderer" component in the Inspector.
- "Cube" game object gets gray.
6. Toggle back on "Mesh Renderer"
7. Rotate the Editor camera around until "Cube" game object gets gray.
8. Repeat steps 2 and 3.
9. Open "ErrShader" shader.
10. Comment line 14 ("GrabPass { }") or change "Transparent + 1" to "Transparent" in line 9.
- "Cube" game object gets gray.

Regression introduced in:

• 5.4

Resolution:
When specifying queues you need to specify them without spaces. The parser currently does not handle spaces properly.