Built-in Attrbutes can be moved to Custom Attributes in VFX Graph Blackboard

Steps to reproduce:

1. Create and open a new project
2. Install the Visual Effects Graph in Package Manager
3. Create an Empty VFX asset and open it
4. Open Blackboard subwindow
5. Create a new Custom Attribute
6. Expand Built-in Attributes in Blackboard
7. Drag any Built-in Attribute into the Custom Attribute section
8. Observe the blackboard

Actual results: The Built-in Attribute moves to the Custom Attributes section

Expected results: The Built-in Attribute doesn't move to the Custom Attributes section

 

Reproducible with versions: 6000.0.14f1, 6000.0.82f1, 6000.3.23f1, 6000.5.11f1, 6000.6.0f1, 6000.7.0a6

Not reproducible with versions: 6000.0.13f1

Tested on (OS): Windows 11 Pro (25H2)

Notes:

• Cannot move the Built-in Attribute when there is no Custom Attribute in the blackboard (hence step 5)
• After saving, the Attribute returns to its default position in Built-in Attributes