Steps to reproduce:

1. Open a Unity Project
2. Create a new Animator Controller via Assets > Create > Animation > Animator Controller
3. Open the new Animator Controller in the Animator Window by double clicking on it
4. Right-click on the graph and create a New Blend Tree
5. Double click on the created Blend Tree node to open it
6. Observe that the initial node has a circular Slider Handle and it's default value is 0
7. Select the initial node and add two Motion Fields to the Motion section in the Inspector
8. Uncheck 'Automate Thresholds'
9. Set the minimum Threshold (topmost Motion) to be higher than the value on the Slider (e.g. 0.2)

Actual results: The circular Slider Handle disappears. The value on the Slider is outside of the allowed range of values by the Motion Thesholds

Expected results: The circular Slider Handle remains. The value on the Slider is clamped to the range of values allowed by the Motion Thesholds

Reproducible with versions: 7000.0.0a15. 6000.1.0b4, 6000.0.36f1. 2022.3.56f1, 2021.3.45f1

Not reproducible with versions: - 

Can't test with versions: - 

Tested on (OS): Windows 11

Notes: -