Steps to reproduce:

1. Create a new URP 3D project
2. Install the Multiplayer Play Mode package (com.unity.multiplayer.playmode)
3. Click on the "Default" dropdown next to the enter Play mode button and select "Configure Play Mode Scenarios"
4. Click the "+" button and add a new scenario
5. Change anything (e.g. add an "Additional Editor Instance")
6. Click Ctrl+S/Command+S shortcut on keyboard
7. Observe the window

Actual results: Newly created Scenario gets unselected and previously selected Scenario gets selected automatically

Expected results: The currently focused scenario should remain selected after using the Save shortcut

Reproducible with versions: 6000.0.73f1, 6000.3.13f1, 6000.4.3f1, 6000.5.0b4, 6000.6.0a3

Tested on (OS): macOS 26.3

Notes:

• Changes in this window appear to be auto-saved, so the Save shortcut does not seem necessary, but pressing Command+S after editing is still a common user action, which makes this easy to trigger accidentally
• The unexpected selection change is disruptive because it can move focus away from the scenario the user is actively editing