"Screen position out of view frustum" error is shown when displaying populated World Space canvas in Multiplayer Play Mode secondary Editor using Input System UI Input Module

How to reproduce:
1. Open the attached “MPCanvas.zip” project
2. Open the “SampleScene”
3. Select the “2P” Play Mode scenario (left side of the Play Mode button)
4. Enter Play Mode
5. Observe the result (Player 2 Editor Console window)

Expected result: No errors appear in the “Player 2” Editor Console window
Actual result: The Console window of the “Player 2” Editor is filled with “Screen position out of view frustum” error

Reproducible in: 6000.0.25f1, 6000.1.0a2
Could not test with: 2021.3.45f1, 2022.3.51f1 (Multiplayer Play Mode package not supported)

Reproducible on: macOS 14.6.1 (M1), Windows 11
Not reproducible on: No other environments tested

Workarounds:

• Disabling Canvas Graphic Raycaster component
• Using Standalone Input Module from the old Input System

Notes:

• Not reproducible in main Editor window and build
• Originally reported on Unity Discussions here - https://discussions.unity.com/t/unity-multiplayer-play-mode-issue-with-world-space-canvas-using-input-system/942047