How to reproduce:
1. Create a new Unity project and install the Visual Effects package
2. In the Project window, right-click -> Create -> Visual Effects -> Visual Effect Graph
3. Narrow down the list tab to the minimum and observe the results

Expected results: The gap is the same when the tab is not narrowed down
Actual results: The gap is different and inconsistent between the list items

Reproducible with: 6000.3.0b9, 6000.3.7f1, 6000.4.0b7, 6000.5.0a6
Not reproducible with: 6000.0.66f2. 6000.4.0b8

Reproducible on: Windows 11, macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested

Note: 
- The gap becomes bigger when hovered on the list items
- The gap is bigger when the Template is added to favourites
- For better reproduction, Learning Templates can be added