How to reproduce:
1. Open user's attached project "Bug.zip"
2. In the Hierarchy select "TrexMain (1)"
3. Change Normal Map value to 1

Expected result: Only the selected GameObject is affected by the change of Normal Map's value
Actual result: Scene view/Game view/Build window becomes entirely black (on 7.1.1 this reproduces only in the Game view)

Reproducible with: 2019.3.0b12 (7.1.1), 2019.4.9f1 (7.3.1), 2020.1.4f1 (8.2.0, 9.0.0-preview.54), 2020.2.0b1 (10.0.0-preview.27)
Not reproducible with: 2018.4.26f1 (4.1.0, 4.10.0), 2019.2.21f1 (6.9.2)

Notes:
- Could not find the exact regression version due to being unable to test this on Unity versions that support HDRP 7.0.0 and 7.0.1
- The TrexMain (1) Normal Map is broken due to being ill-formatted
- Changing Normal Map's value to something really small (for example 0.0000001) makes this issue not appear
- Happens wherever Normal Map is used. Shader can be changed to HDRP/LitTessellation from HDRP/Lit for identical reproduction
- Normal Map value 1 is not the exact value this issue appears in, these values differ when trying to reproduce in the Scene/Game view and they also differ between different Unity versions
- Potential issues during an upgrade between different Unity versions can be solved by importing the Scene "Bug" directly to a new project
- Can't test this on URP as this is related to HDRP Normal Maps
- TrexMain (1) GameObject's mesh and Normal Map only exists within the Scene (they were imported)
- On 7.1.1 project fails to build with multiple "Dimensions of color surface does not match dimensions of depth surface
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)" errors