Number Keypad Scrolling Error - Office 365 Excel

My team just recently upgraded to Office 365 and we are all experiencing issues in the new Excel product.  Occasionally, while typing on the number keypad in a cell, the numbers 2, 4, 6, & 8 will scroll to another cell.  The scrolling doesn't happen every time those keys are pressed, but it is happening consistently every day.  It also occurs whether 2/4/6/8 are the first number in the formula string or midway through keying in a formula. 

Any advice for solving this issue would be greatly appreciated!