I'm checking to see if this is just mine 10.11 or everyones. 1. Open Notes, 2. Minimize it to the doc (press the yellow minus in the top left), 3. Switch to 'using' another app, chrome or something. 4. Now click on the main Notes icon in the doc (not where it minimized to, as if you were launching it for the first time). Does it unminimize from near the Trashcan? Mine stays next to the trashcan, I have to click the minimized window to bring it up.