Thunderbird Incoming Mail, Play A Sound feature in latest updates of Eclipse 140.4.0esr does not function.

[JerryM]

Whether you select Use System sound or a custom sound of your own, no sound is played when mail arrives.  In fact, the test PLAY button also has no effect and produces no sound.

[siffemcon]

Works for me on same version/Win11. Does it play in Troubleshoot mode (https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird/)?