Cannot access Script Execution Order dropdown due to duplicate key

[Ben Droste]

1. Attempted to add a script to the Script Execution Order, but clicking on the + dropdown resulted in the error in the following exception:

ArgumentException: An item with the same key has already been added. Key: Assets/Plugins/Sirenix/Assemblies/Sirenix.OdinInspector.Editor.dll.meta

2. Create a new URP project, install Odin Inspector from the package manager, attempt to access Script Execution Order dropdown. I have not tested if this is unique to URP.

3. Screenshot:

4. Unity version: 2020.2.0f1

5. Odin version: 3.0.1.0

6. Not enabled

7. Windows 10 Home

[Tor Esa Vestergaard]

Duplicate of #731.

[Tor Esa Vestergaard]

This is a duplicate of 731, and is as far as I can tell not something it is possible for us to fix in Odin, as all Odin is doing is existing, and the error is in Unity, with Odin involved nowhere in the responsible code. We have so far been unable to reproduce the issue internally, so we cannot viably report the issue to Unity in a way that is useful to them, therefore those who have the issue and can reproduce it must make the error report to Unity.