Sleep as Android doesn't vibrate when in Bedtime Mode on Galaxy Watch 4

So when I set my watch to bedtime mode, Sleep as Android won’t make the watch vibrate at all. The connection between smartphone and watch app works and everything is fine until I activate bedtime mode.
So again - no bedtime mode, no problem.
I went to the settings and made sure do-not-disturb-mode on watch and phone synchronize. Alarms are allowed to ignore DnD mode but unfortunately, I still get no vibration at all to wake me.
This problem existed both in the latest standard version and in the beta as well.