How to reproduce:
1. Open the attached “IN-106553” project
2. In the Project tab, select the “TestSound” asset
3. In the top right corner of the Inspector, press the Edit button
4. In the new window, press “Play/Stop” button
5. Close the window
6. Listen to the sound playback

Expected result: The sound stops the moment window is closed
Actual result: The sound keeps playing when the window is closed

Reproducible with: 1.0.0-pre.2 (6000.2.0b2), 1.0.0-pre.15 (6000.2.0b8, 6000.3.0a1)
Couldn’t test with: 2022.3.64f1, 6000.0.52f1, 6000.1.10f1 (package is not supported)

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

Note: If loop option is enabled the sound will keep playing until the Editor is closed. Additionally multiple playbacks can be initiated this way, all behaving the same way.