Code review comment for lp:~michael-sheldon/ubuntu-keyboard/fix-1411645

Found one issue. If you use the cursor to re-position to a different word after autocompleting a word and then backspace the previous is word is replaced incorrectly.

For example type:
"I beleive" (space to autocomplete believe) "you" (space to complete)
then move cursor after "believe" and press backspace and "believe" is replaced with "you"