Changes are not saved while editing a prefab in isolation when Auto Save is toggled on and editing scripts values

Unity: Serialization

As Designed

6.6.X

6.5.X

6000.5.0a5 onwards

6.4.X

6000.4.0b5 onwards

6.3.X

6000.3.5f1 onwards

6.0.X

6000.0.66f1 onwards

Thank you for reporting a bug to Unity. After reviewing the behavior, we've confirmed it aligns with the current design and intended use of the feature. We understand this may differ from your expectations or workflow. We will close this case as 'As Designed.' If you have feedback on how the feature could better meet your needs, please let us know - we value your input and consider it in future improvements.

How to reproduce:
1. Open the attached “IN-141878” project
2. Open the “GameObject” prefab in isolation prefab editing
3. Make sure “Auto Save” is toggled on
4. Edit any values of the attached script component
5. Observe the Hierarchy

Actual result: The changes are not saved while editing fields
Expected result: The changes are saved right after entering them

Reproducible with: 6000.0.74f1, 6000.3.15f1, 6000.4.6f1, 6000.5.0a5, 6000.5.0b7, 6000.6.0a4
Not reproducible with: 6000.5.0a4

Reproducible on: macOS 26.4 (M1 Pro), Windows 10 (user reported)
Not reproducible on: No other environment tested

Note: The changes are saved when clicking anywhere in the Editor

Changes are not saved while editing a prefab in isolation when Auto Save is toggled on and editing scripts values

Unity: Serialization

As Designed

Prioritise and Follow this issue

Have a workaround or additional info about this issue?

Changes are not saved while editing a prefab in isolation when Auto Save is toggled on and editing scripts values

Unity: Serialization

Statuses

As Designed

Resolution Notes

Description

Prioritise and Follow this issue

Have a workaround or additional info about this issue?