Maxim, the name of the filter clearly says that it should filter. You have an error either in the name or in the algorithm.
The word "were" has a very definite meaning. For your logic there is another word "Switched"
....who moved to the selected stages in a given period of time
As for me, it is better to do as it is written in the title, but as a last resort, please correct the name of the filter. For example, KPI
https://crm.ohrana.ua/admin/kpi/90/ fixes the processes that WAS at these stages on a certain date. But it is impossible to filter these processes because the filter does not work as it is written. Thank you.