Reproduction steps:
1. Open the attached project.
2. Play the scene.
3. Open Window > Frame Debugger.
4. Enable it.

Actual behavior:
- Three DrawGL or Draw Dynamic sections shows up(Screenshots attached). One of them has 'ImageEffects Temp..' and two of them have 'TempBuffer..' set as _MainTex.

Expected behavior:
- Only one DrawGL or Draw Dynamic section shows up.

Workaround:
- Disable the 'Camera' game object.

Reproduced with:
5.6.0a1, 2017.2.0b3
OpenGL, Metal, DirectX

Not reproducible with:
5.5.4p2

Regression introduced in:
5.6

Resolution:
We picked the method that would result in the best overall functionality and performance in the real cases that we had. In this case what happens is that when rendering is started a texture is generated, all rendering happens into this texture, and then as the last image effect it is blitted to the backbuffer.