Autocomplete (and Selectmenu) Menus Closed if Dialog is Dragged

[NMcCloud]

If an autocomplete (or selectmenu) menu is currently open within a dialog, and that dialog is then dragged from the non-text portion of the titlebar, the menu is automatically closed due to blurring. If the dialog is dragged by the text portion of the titlebar, the menu will stay open.

This works in 10.4.

​http://jsbin.com/yucirumexu/1/edit

In the example, type "a" in the autocomplete dialog, then attempt to drag the dialog using any part of the titlebar, except for what is inside the black border. Using the bordered region works.

Thanks,

Ken

[hmethvin]

We expect the menu to close when dragged (see #6644) but the input should stay focused.