selecting multiple items(dragable and non-dragable) causing the non-dragable items to also be removed on drop.

Note: tested on Qt 5.12, windows 10. Might affect other versions and platforms

Qt seems not to not honor Qt::ItemIsDragEnabled if multiple items are selected ( a mix of ItemIsDragEnabled  and not, items) 
and after the drop ( which only shows the correct ones) , it seems to delete/remove
all of selection even some were not dropped/DragEnabled. 

The Drag icons correctly shows only the Qt::ItemIsDragEnabled items but after drop all is removed.

Test sample that shows this.

https://www.dropbox.com/s/urt1pwfvqs3xmbj/DragDropFail.zip?dl=0

Steps to reproduce:

Place 2 QListWidgets on form.

Add a mix of items having Qt::ItemIsDragEnabled on only some of them.

Select all of them and drag to the other QListWidget.

forum post

https://forum.qt.io/topic/99024/select-multiple-items-dragable-and-non-dragable-causing-the-non-dragable-items-to-disappear