Multiplayer Play Mode additional Editor instance keeps running outdated script code when domain reload is disabled

How to reproduce:

1. Open the attached “IN-151938” project
2. Open the “SampleScene” scene
3. In the top bar of the Unity editor, select “Window” > “Multiplayer” > “Multiplayer Play Mode”
4. In the opened “Multiplayer Play Mode” window under “Virtual Players”, enable “Player 2”
5. In the Unity editor, enter Play mode
6. Exit Play mode
7. In the Hierarchy tab, select “Main” GameObject
8. In the Inspector tab, right-click “Bug Test (Script)” > click “Edit Script” and open in code editor
9. In the opened code editor, change “print(“Hello World!”)” to “print(“Test”)” and save the changes (Ctrl + S)
10. In the Unity Editor, enter Play mode
11. Observe the results in the Consoles of Main editor and “Player 2”

Actual result: The Main Editor prints "Test" and "Player 2" still prints "Hello World!"
Expected result: Both the Main Editor and "Player 2" print "Test"

Reproducible with: 6000.7.0a5, 6000.7.0a6
Not reproducible with: 6000.3.23f1, 6000.6.1f1, 6000.7.0a4
Could not test with: 6000.0.83f1 (CurrentPlayer.IsMainEditor is not available - MPPM 1.x exposes CurrentPlayer under the Unity.Multiplayer.Playmode namespace)

Reproducible on: Windows 11 Enterprise (25H2)
Not reproducible on: No other environments tested

Workaround: In the top bar of the Unity editor, select “Edit” > “Project Settings” > select “Editor” and under “Enter Play Mode Settings”, change “When Entering Play Mode” value to “Reload Domain only” or “Reload Domain and Scene”