On dragging the mouse cursor over the Match slider don't change its value under Screen Match Mode Parameters from Panel Settings Asset, refer to the attached video.

Steps to repro:
1. Create a new project.
2. Project > Create > UI Toolkit > Panel Settings Asset
3. Scale Mode > Scale With Screen Size
4. Scale Mode Parameter > Screen Match Mode Parameter
5. Change the input value of the Match slider using a mouse dragger

Actual Result:
The Match slider input value under Screen Match Mode Parameter is not changing on dragging the mouse over it

Expected Result:
Input value of Match Slider is changed using mouse dragger

Note: Panel Settings Asset is introduced in Unity 2021.2.0a4

Reproducible in:
2021.2.0a14, 2021.2.0a4

Environment:
Windows10 and macOS 10.15