Hey, user, how do you feel if the useful translation tool:
- would put the text you type in a field a dozen pixels tall?
- would truncate the translation to a few words and require you to click an extra button to see it. And then wouldn't even scroll to the translation?
- show you suggestions from history by covering half of the remaining screen space, *and* at the same truncating said history to a few words a time?
Note though: all of these are *conscious decisions*. There were people who designed this interaction, signed off on it, implemented and shipped. Because it's significantly easier and faster (both for the user and the developer) to just show the full translation in the adjacent pane.