Steps to reproduce:
1. Open the attached project “Repro Project”
2. Open “Multiplayer Play Mode” window (Window > Multiplayer > Multiplayer Play Mode)
3. Select one of the Virtual Players (ex. Player 2)
4. Enter Play mode
5. Type a name in the “session Name” field and  press “Create” button to join the session
6. Press “Refresh List” button, select the newly created session and press “Join” button in Player 2 window to join the session
7. Observe both Game windows and move the Player in the Editor

Actual results: Player 1 movements and actions are not visible in Player 2  window
Expected results: Player 1 movements and actions are visible in Player 2  window

Reproducible with versions: 1.4.3 (6000.2.0b4)

Tested on (OS): macOS Sequoia 15.4 (M4)

Note: 

• Repeat 4-6 steps a few times if issue does not reproduce
• Changing Editor version makes issue not reproducible or actual results differ
• Restarting the machine makes issue reproducible again