Bug Animations are Broken with Unity 2023.1.0a23

When I create a blank project with URP, creating an animation makes the console spam this message:



Also, when editing a state transition, the inspector window does not look right at all:



Notice the Condition Mode which is an integer rather than an enum.

Bug report: IN - 26462

 

After some more checks, the issue also appears without URP. I tried with version 2022.2 and don't have the issue there.

InvalidOperationException: The operation is not possible when moved past all properties (Next returned false)

I tried copying the manifest.json from 2022.2 to 2023.1, except "com.unity.feature.development": "1.0.1", that requires version 1.0.2 and the issue is still there.

 

I have somehow fixed it by wiping everything Unity in AppData, then I've added "com.unity.feature.development": "1.0.2", to my project, and the issue with the inspector was caused by the Debug mode, I've set it to normal.



However I can't say for sure I know the cause of the problem because it has failed many times with new projects before I wiped the contents in AppData.

I had also downgraded the localization package from 1.4.2 to 1.3.2 because I had errors with it, it might be the cause of the problem since the version 2023.1.0a23 reverted it to 1.4.2.