How to reproduce:
1. Create a new Unity project and install the Multiplayer Services package
2. In the Package Manager, go to All Samples -> Leaderboards Deployment -> Import
3. Wait for the scripts to compile and observe the Project window
Expected results: The Project window doesn't break
Actual results: The Project window breaks and errors are spammed
Reproducible with: 6000.6.0a7
Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested
Note: The bug reproduced only once but tracking it in case more consistent repro steps are identified
Error sample:
NullReferenceException: Object reference not set to an instance of an object
UnityEditor.ExposablePopupMenu.OnGUI (UnityEngine.Rect rect) (at /Users/bokken/build/output/unity/unity/Editor/Mono/GUI/ExposablePopupMenu.cs:88)
UnityEditor.ProjectBrowser.SearchAreaBar () (at /Users/bokken/build/output/unity/unity/Editor/Mono/ProjectBrowser/ProjectBrowser.cs:2861)
UnityEditor.ProjectBrowser.OnGUI () (at /Users/bokken/build/output/unity/unity/Editor/Mono/ProjectBrowser/ProjectBrowser.cs:2253)