When you roll (minimally) the mouse wheel, up or down, while using Google Sheets in Firefox (only!), it sends you all the way down to the end of the sheet. Do it again, and it won't move from that position. I have been asking this for a while. Seems like a minor bug, but it's PRETTY annoying for those of us who have the use of the mouse wheel as a second nature. So please, PLEASE, '''PLEASE ''', fix the bug! thanks