Steps to reproduce:

1.  Unzip the attached file OAFR-stop-bug.zip
2.  Open the contained Unity project
3.  Open the scene SampleScene
4. Enter play mode
5. Enable the component Sine OAFR, which is attached to the Audio Source game object
6. Observe audio is playing
7. Click the button in the scene

Actual results: 
Nothing happens.

Expected results: 
The audio stops playing.

Reproducible with versions: 
6000.0.57f1, 6000.3.0b2, 6000.4.0a1

Not reproducible with versions: 
N/A

Can’t test with versions: 
N/A

Tested on (OS): 
macOS 15.6.1

Notes:
As this was discovered during testing of UUM-114268, there is already a test for this. When a fix is ready, re-enable the currently ignored test case {{ToggleEnabledStateOfGeneratorOAFR_WhilePlaying_AffectsSignalAsExpected(Prefab,AudioListener,Disabled)}}. This is done by removing the conditional here.