Periklo_A - Thanks for reporting this. It would be helpful if you would send feedback about this issue from within Excel. Please click Help > Feedback, and then choose I don't like something. You can just paste the information above and send it. The feedback will include some diagnostic information including your version of Excel. When did you last notice that you could scroll the sheet tabs? The behavior you mention when trying to scroll in the sheets is how scrolling has worked prior to this improvement, so it seems like it is just not enabled on your computer. Changes like this are enabled gradually for a percentage of computers based on random selection, so it's not unexpected that you would be seeing it scroll 3 rows or columns at a time. There's a setting in your Windows mouse settings that controls how many lines/rows it should move when you scroll.