QDropEvent->mimeData()->text() always returns an empty string

I have enclosed a sample program. Just start it and drop text into the GUI. No matter what you insert QDropEvent->mimeData()->text() always returns an empty string, see debug output.

Two examples:

Drag & drop the current url from omnibox of the browser

hasText():  true
formats():  ("text/plain", "_NETSCAPE_URL", "text/uri-list")
text():   ""
html():   ""
urls():   (QUrl("https://bugreports.qt.io/secure/Dashboard.jspa"))

Drag & drop from text editor

hasText():  true
formats():  ("text/plain")
text():   ""
html():   ""
urls():   ()