“Dispatch queue has processed 250 items which suggests a possible infinite loop.” and “NullReferenceException” errors are thrown when Generating a new Animation and the Animation asset is deleted

Steps to reproduce:

1. Create a new Unity project using the Universal 3D template
2. Install the AI packages (AI button in the customizable toolbar)
3. Click the AI button in the customizable toolbar 
4. Select Generate New > Animation
5. Dock the New Animation window
6. Enter any prompt and click the Generate button
7. While the animation is being generated, delete the animation asset in the Project window
8. Observe the Console window

Actual results: “Dispatch queue has processed 250 items which suggests a possible infinite loop.” and “NullReferenceException” errors are thrown

Expected results: No errors are thrown

Reproducible with versions: 2.17.0-pre.1 (6000.0.81f1, 6000.3.22f1, 6000.5.8f1, 6000.6.0b8, 6000.7.0a4)

Tested on (OS): MacOS Silicon Tahoe 26.5.1

Notes:

• Does not throw any errors when doing the same reproduction steps while generating a Texture