When entering data and an autocomplete begins, it is impossible to use the tab
key to both accept the autocomplete entry and move to the next cell. For
example, if I am typing "United States of America," and an instance of that
entry occurs in the spreadsheet already, I might need to type only "Uni" before
the cell fills in with  "United States of America". I am able to hit <enter> or
the arrow key to accept and move to another cell, but I would like to be able to
use the tab key to do so, like you can in excel. As it is, you can use the tab
key only after you have keyed in the complete entry.