Calendar App - colour & order consistency

CatherinePaine

I have a calendar in the calendar app with 2 column groups and multiple tiles. When i set and use filters the order of the columns flips randomly (the view does not remain constant). e.g. column 1 will show group A, Group B, Group C, but if i change the filter it will show C, B, A, or B, A, C (seemingly very random) - even using the grouping order in all the combinations i can't just make it alphabetised.

The colour blocks also change as you filter or scroll through months - my team want TV = Green, Movie =Blue , Other Pink but the colours flip for now reason.

How can i make this consistent?