How to reproduce:
1. Create a new Unity project
2. Make sure to use the default layout
3. In the Project window, right-click -> Create -> Shader Graph -> Blank Shader Graph
4. Select the created Asset and press Ctrl + D (Command + D) to duplicate the Asset several times
5. Open each of them so the Scene/Game view tab group becomes populated 
6. Observe the results

Expected results: The new window is always focused in the tab group
Actual results: The newly opened tab is not focused

Reproducible with: 6000.0.43f1, 6000.1.0b11, 6000.2.0a7

Reproducible on: macOS Sequoia 15.3 (M1)
Not reproducible on: No other environment tested