Playing sound triggers every time a stickie wakes up

I disabled the setting: Alerts → Defaults when waking → Play sound

After the change sound plays now every time whether or not "Play sound on wake" is selected in "Sleep note" window.

I installed the latest version and rebooted. Problem stays.

This happens when:
- Note is set to sleep by Custom selections window
- Note is set to sleep by quick selection context menu
I also tried to close the "Sleep note" - window in two ways: by pressing Return the key and by clicking the "Sleep" button.

Sound does not play when I set an alarm for note and select "Sleep until alarm sounds"