On selecting different material from "Decal Projector (Script)" throws errors continuously (Material doesn't have a float or range property '_DrawOrder'
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
), refer attached video

Steps to repro:
1. Create a new project with HDRP Template
2. Upgrade High Definition RP Package to 7.1.7
3. Hierarchy > Create > Rendering > Decal Projector
4. Inspector > Decal Projector > Material > Select different Material

Actual Result:
Errors are thrown continuously

Expected Result:
Material get selected without throwing any errors

Tested on Unity version:
2020.1.0a18, 2019.3.0f5

Note: Unable to check on 7.1.2 because this package version was broken

Package Found version: 7.1.7, 7.1.6, 7.1.5

Package working fine version: 7.1.1, 7.0.0

Environment:
Windows 10 & macOS 10.14