When the following setting is added to DefaultEngine.ini, the AnimNode content is not applied during PIE execution.
[/Script/Engine.EditorStreamingSettings] s.AsyncLoadingThreadEnabled=True
If the AnimBP is recompiled once, the AnimNode behavior is applied correctly. Additionally, when s.AsyncLoadingThreadEnabled=False, this issue does not occur and the AnimNode works as expected.
Expected:
The result of the BlendMask in LayeredBlendPerBone is applied, and only the front wheels of the vehicle rotate.
Result:
The result of the BlendMask in LayeredBlendPerBone is not applied, and the vehicle’s wheels do not rotate.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-369920 in the post.
| 0 |
| Component | UE - Anim - Runtime - Anim Blueprints |
|---|---|
| Affects Versions | 5.7.4 |
| Created | Mar 16, 2026 |
|---|---|
| Updated | May 1, 2026 |