Reproduction steps:
1. Open the attached “BugRepro” project
2. Open “Multiplayer Play Mode” window (Window > Multiplayer Play Mode)
3. Enable “Player 2” under “Virtual Players”

Expected result: “Player 2” player becomes active
Actual result: “Player 2” player does not activate and goes back to “Inactive” state

Reproducible with: 0.6.0 (2023.2.12f1), 1.0.0-pre.2, 1.0.0-pre.3, 1.0.0-pre.4 (2023.3.0b9)

Reproducible on: Ubuntu 22.04
Not reproducible on: Windows 10

Note:
- After enabling a player and it goes back to being inactive, it can no longer be selected