Bug: Filters are not working properly

[M-IMS]

I have a table visual, All dates are dates (not date time).

User changes filter on UTM Source, lets call them utm1 and utm2, user sets utm1 and utm2, it shows value

she then removes utm2 and adds it again, and the value is different

this doesn't make sense, I can't reproduce at my end on the service.

I'm on UTC Local, User at Eastern NA

it doesn't make sense that it would happen, service is UTC, the columns are dates only, I told them to use last calendar month instead, but it doesn't make sense.

the measure are just calculate sum + userelationship

I have a video of it in real time happening