Hey Jenny -
Question for you, are you on the latest version of Apptio?
I have a very similar style report I have been working on recently, the different time pickers are adjusting my formatting as well. What we did instead of the different time pickers is we have tabs for each specific time selection. Instead of picking a picker, they will select a tab.
Alternatively, I have tried using the "Freeze" button. It does work well in some reports.

Finally, if you select a time period that is breaking and re-arrange the order to your liking, save and check in. I have had good results that way.
Let me know if you have any questions on my above suggestions and if they work out!
Renee
#TBMStudio