Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/SampleScene“ Scene
3. In the Editor toolbar, open the Multiplayer Role dropdown menu and select “Client”
4. Enter Play Mode
6. Observe the Console window

Expected result: Only the “joiner“ script is run
Actual result: The “ServerRun” script is run and its logs are shown in the Console

Reproducible with: 0.9.0, 1.0.0 (6000.0.0b12)
Couldn't test with: 2021.3.35f1, 2022.3.20f1 (this package is not supported in these Editor streams), 2023.2.12f1 (this stream's latest supported package version is 0.7.0, which does not have Multiplayer Roles menu)

Reproducible on: Windows 11
Not reproducible on: No other environment tested