Steps to reproduce:

1. Create a new Unity Project
2. Install the AI Assistant package via Package Manager (com.unity.ai.assistant)
3. Navigate to Window > AI > Assistant
4. In the Assistant window, click the "History" button
5. Review the displayed history list
6. Dock the "Assistant" window next to the "Game" window
7. Observe the result

Actual results: Space becomes visible in the docked list view

Expected results: No space. The same view should stay

Reproducible with versions:  1.0.0-pre.10(6000.3.0a3)

Not reproducible with versions: -

Can’t test with versions: -

Tested on (OS): M1 Max - Sequoia 15.5