It is not possible to hover or press on some functions when function list window in the Script Graph does not fit at the bottom. The list jitters when hovering and the cursor keeps jumping.

*Reproducible with:*
* VS version: 1.5.2 - 1.7.1, 1.7.2
* Unity version: 2021.1.2f1 - 2021.1.8f1, 2021.2.0a9 - 2021.2.0a18
* Platform: Windows 10

*How to reproduce:*
1. Open the attached "case_1333369.zip" project
2. In the Project window, open Test asset
3. Make sure that Script Graph window bottom is lined up with Editor's bottom (or close to it)
4. Right-click near the bottom and in the search box type in SendMessage (or anything else)
5. Try to hover on some function from the list

*Actual result:*
* It is not possible to hover or press on some functions as the cursor keeps jumping, the function list jitters

*Expected result:*
* Function is highlighted

Not reproducible with: 1.5.2 - 1.7.1 (2021.1.0a1 - 2021.1.1f1, 2021.2.0a1 - 2021.2.0a8)
Could not test with: 2018.4.35f1, 2019.4.26f1, 2020.3.10f1 (Visual Scripting is not available)