How to reproduce:
1. Open the attached project "Animation"
2. Open the "SampleScene" scene
3. In the Hierarchy, select the "GameObject" and open the Animation window
4. Expand the "Position" and "Scale" properties
5. Using the "Ctrl"/"Command", select the sub-properties of both properties
6. Press "Backspace"/"Delete" and observe the results
Expected results: Both properties are deleted
Actual results: Only "Scale" property is deleted
Reproducible with: 6000.0.71f1, 6000.3.11f1, 6000.4.1f1, 6000.5.0b1, 6000.6.0a1
Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested