Context menu stays open when dragging QML type on Mac

Steps to reproduce:

• create a Qt Quick 2 UI
• switch to Designer
• open any context menu (on an Item on Navigator or the filter line edit on QML Types)
• without selecting something of the context menu drag an item from QML Types onto the preview

Current result:

• context menu stays open (even after dropping the item onto the preview)

Expected result:

• context menu closes when loses the focus (what it should if I click somewhere else)

Note: on the screenshot you can see the Flipable that is dragged across the context menu.