UI Builder's "Inlined Styles" Variables list slightly freezes when reordering the elements in it

How to reproduce:
1. Create a new Unity project
2. In the Project window, right-click -> Create -> UI Toolkit -> UI Builder -> Open the created Asset
3. Add the Visual Element into the UI Builder's Hierarchy and select it
4. In the UI Builder's Inspector, go to Inlined Styles -> Variables -> + -> Add a few elements
5. Reorder the list and observe the results

Expected results: The is no freezes when the list is reordered
Actual results: There is a small freeze when the list is reordered

Reproducible with: 6000.6.0a2
Can't test with: 6000.0.71f1, 6000.3.12f1, 6000.4.2f1, 6000.5.0b2 (No variables)

Reproducible on: macOS Tahoe 26 (M1) 
Not reproducible on: No other environment tested