night mode

Can someone explain how the "night mode" should work?

I'm using a shelly duo in my bathroom with a conventional switch (cuts the power)

My expectation is that if I switch the bulb - using the physical switch on the wall:

- the bulb boots up,

- checking the time,

- using the last settings - if outside of the nigh mode schedule.

- using the night mode settings - if inside the night schedule.

In practice it is just not work this way, it is always using the last settings.

So, this is a bug or works as designed?

For me - in case of a socket E27 bulb - features working only if 'always powered' is pretty much useless.