This "works as designed", means if you select "auto-generate" it will look at each column seperately, detect high/low and add color. same happens to breakdowns where it calculates the new high/low (high/low based of the breakdown of a single column!)
but when you change formatting to "custom", it will take the high/low only for the first level, not for any breakdowns you have. I guess the reason is that it there are a lot of cases where the custom high/low doen't make sense and would mess up the picture ...
jen.lasser are there any ideas/plans to change this?
Urs is correct. Conditional formatting only applies to breakdown rows when "auto" is selected. We disable conditional formatting for "manual". We have a backlog item to address this, no release date yet though.