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By Design

Votes

0

Found in

2020.3.44f1

2021.3.18f1

2022.2.6f1

2023.1.0b3

Issue ID

UUM-27293

Regression

No

[Prefab] Playmode clears Prefab script list data unless completely unpacked

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*Repro:*
# Open scene Assets -> Scenes -> Alasdair -> AnimationTesting
# Click on LookManager in Hierarchy to view in Inspector.
# In the Loot Crate Manager component, expand the dropdowns to view the lists.
# Click ‘Load Resources as arrays’ and ‘FindAllLootCrates’ to populate the lists.
# Enter Play mode.

 

*Expected Outcome:* The Loot Crate Manager Component lists stay populated.

*Actual Outcome:* List items are all set to None/Missing.

Then:
# Right-click LootManager in Hierarchy -> Unpack Completely
# Repeat steps 2->5.

This time the expected outcome happens.

Reproducible on 2023.1.0b3, 2021.3.18f1, 2020.3.0f1 - marking as not regression.

 

*Note:*
* In 2020 the list is showing as empty instead of having missing objects, but the same issue with data disappearing occurs.
* Attached GIF demonstrating this issue.

  1. Resolution Note:

    After populating the lists of the Prefab Instance in "Load Resources as arrays" and "FindAllLootCrates", there is no call to PrefabUtility.RecordPrefabInstancePropertyModifications. Adding a call to this method will ensure that changes on the Prefab Instance are recorded and that the lists stay populated in Play Mode. Please see https://docs.unity3d.com/ScriptReference/PrefabUtility.RecordPrefabInstancePropertyModifications.html

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