Importer(NativeFormatImporter) generated inconsistent result for asset warning appears when creating new groups/snapshots in Audio Mixer

Steps to Repro:
1. Create a new Project
2. Project window > Right-click > Create > Audio Mixer
3. Double click on created Audio Mixer
4. Audio Mixer Window > Groups > Click + Icon

Actual Result:
Warning Appears in the console

Expected Result:
Group is added without any warnings

Reproducible on: 2021.2.0a8, 2021.1.0b10, 2021.1.0a1, 2020.2.2f1

Working on: 2018.4.31f1, 2019.4.21f1 ,2020.1.17f1, 2020.2.0a15

First Affected Version: 2020.2.0a16

Environment: Windows 10, Mac 10.15

Warning Stack Trace:
Importer(NativeFormatImporter) generated inconsistent result for asset(guid:b660163588282344b8b62678e8580919) "Assets/NewAudioMixer.mixer"
UnityEditor.HostView:OnLostFocus ()

Importer(NativeFormatImporter) generated inconsistent result for asset(guid:b660163588282344b8b62678e8580919) "Assets/NewAudioMixer.mixer"
UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)