-Game view window becomes lit/Auto Exposure effects when mouse over and out on the game view after setting Camera Background Type to Color.
-Camera preview window also becomes lit.

Steps to repro:
1. Create a new HDRP template project.
2. GameObject > 3D > Cube.
3. Select the Main Camera > Background Type > Color.
4. Move the cursor over the camera preview window and Game view.

Actual Result:
Game view window becomes lit/Auto Exposure effects.

Expected Result:
Game view window should not become lit/Auto Exposure effects.

Reproducible in: 2020.2.0a9, 2020.1.0b8, 2020.1.0b6 with Package version 9.0.0, 8.1.0.

Working fine in: 2020.2.0a9, 2020.1.0b8 with Package version 8.0.1.

Environment:
Occurring on Windows 10 & Mac 10.15