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Duplicate
Duplicate in 6000.6.X
Votes
0
Found in
6000.0.73f1
6000.3.13f1
6000.4.3f1
6000.5.0b5
6000.6.0a3
Issue ID
UUM-140266
Regression
No
Package Manager throws ScriptableSingleton related errors after a package was installed while there were pending package manifest changes
Steps to reproduce:
- Open the attached project
- Open the Package Manager window
- Select one of the local packages
- Expand the Manage menu and select the Edit Manifest option
- Make any change to the package's manifest
- Without saving or discarding changes, switch to Packman's Unity Registry tab
- Install any package or feature (For example - the 2D feature)
- Observe the Console window
Actual results: SerializedObject and ScriptableSingleton already exists errors are thrown
Expected results: No errors or warnings are thrown after installing a package or a feature
Reproducible with versions: 6000.0.73f1, 6000.3.13f1, 6000.4.3f1, 6000.5.0b5, 6000.6.0a3
Tested on (OS): macOS 26.3.1
Notes:
- ScriptableSingleton-related errors will persist and will be thrown after installing/removing subsequent packages. It will disappear after reloading the Editor, however.
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Resolution Note:
Thank you for reporting a bug to Unity.
We have investigated the issue but were unable to reproduce it with the information provided. This can happen due to differences in environment, project setup, or steps taken.
We will close this case for now. If you're able to share additional details such as different projects, steps, hardware/software configuration, or logs - please let us know, and we'll be happy to re-evaluate.
Resolution Note (6000.6.X):
Thank you for reporting a bug to Unity.
We have investigated the issue but were unable to reproduce it with the information provided. This can happen due to differences in environment, project setup, or steps taken.
We will close this case for now. If you're able to share additional details such as different projects, steps, hardware/software configuration, or logs - please let us know, and we'll be happy to re-evaluate.