Escape auto-completes, doesn't exit text field

Even in “Classic Mode”, hitting Escape doesn’t exit the notes field, it instead brings up OS X’s built-in autocomplete feature. I have autocorrect turned off in OS X system preferences, but OF2 doesn’t seem to know (it also autocorrects misspellings). Any ideas about what I can do to stop this?

OS X 10.9.2, OF 2 Revision 207080.