Cleaning Station Hours

You already had this bug before.

I tested, it doesn’t matter which day they are free, it will be counted as if they worked that day.
Their hours will remain the same regardless of whether they work or not.

I had to use imgur, I’m a new user and I can’t add more than one picture

Oh yeah! Apparently, this has been declared “working as intended” by the devs. Your cleaners still work on days the store is closed, so that’s why the numbers still add up on those days!

Is it a bug then, or did they leave it like that on purpose?

Left it on purpose. This allows you to schedule cleaners after or before the shift starts as well.