"An editor should only have 0 or 1 TopView" errors are thrown when pressing “Focus on Player” button multiple times

Reproduction steps:
1. Create a new project
2. Install Multiplayer Play Mode package (Window > Package Management > Package Manager)
3. Open Play Mode Scenarios window (Window > Play Mode > Scenarios), add a new Scenario and an additional Editor Instance
4. Select newly created Scenario as the active Scenario
5. Open Active Scenarios window (Window > Play Mode > Active Scenarios)
6. Press “Activate” button to activate Player 2
7. Press “Focus on Player” button up to ~10 times rapidly
8. Observe Player 2 Console

Actual result: “An editor should only have 0 or 1 TopView” errors are thrown
Expected result: No warnings or errors are thrown

Reproducible with: 1.6.3 (6000.0.79f1), 2.0.2 (6000.3.20f1, 6000.5.4f1), 3.0.0 (6000.6.0b5, 6000.7.0a3)

Reproduced on: Ubuntu 24.04, macOS Tahoe 26.5 (M4)

Note:
Full error:

An editor should only have 0 or 1 TopView. [-1]
UnityEngine.Debug:Assert (bool,string)
Unity.Multiplayer.PlayMode.Editor.TopView/<>c__DisplayClass3_0:<CreateGUI>b__5 () (at /Users/bokken/build/output/unity/unity/Modules/MultiplayerEditor/Managed/MultiplayerPlayMode/Workflow/UI/TopView.cs:122)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions () (at /Users/bokken/build/output/unity/unity/Editor/Mono/EditorApplication.cs:413)