Autocomplete: mouseover of menu item causes data loss

When you hover a menu item with the mouse the active but not yet selected item is put into the input, replacing the search term. When the item is blurred, even if the menu is closed by clicking the document, the menu is closed and the highlighted (but never selected) item remains in the input, causing loss of data, as the search term was replaced with the user clicking. The same behavior is not present when using the keyboard, even though the item value is temporarily placed in the input and cycling through the items with the arrow keys, you can navigate back to the search term as well as restore it with the ESC key. Click off the menu to close it without selecting an item should have the same behavior as the ESC key, restoring the search term.