1. edit a JS file
2. click on some appropriate code and open Quick Edit
3. in the inline editor, type some JS code, let code hints appear, and hit tab to accept the first hint --- for example, type "fal", and hit tab to accept "false"
4. in the main editor, open the file you're editing inline
5. look at what you just typed

Expected: "false"
Result: "falsese" -- the characters that were added by auto-complete were added twice

Sprint 24, Mac and Windows.