https://bugs.winehq.org/show_bug.cgi?id=55179
--- Comment #13 from Pascal Mons pascal_mons@hotmail.com --- Dear Mr. Henrie,
I consider your intervention here as just an uneducated noise, no more.
First of all, I was in communication with the developer of the DND capability within WineHQ. He never mentioned that it wasn't a bug.
Second topic. I am a subscriber of the stable channel release of WineHQ, and as I said before, just when the new version 8.0 came available my system [Ubuntu Focal 20.04] was upgraded to that new release from the previous one 7.0.2.
The Drag & Drop capability was working as designed across all systems flavour, namely UNIX and Windows, meaning as soon as the mouse enter the application's window, it is processed efficiently by the application, no matter where over the application window, the mouse is. Please note that the processing may depends on where the mouse is positionned (in particular on maps), although it's irrelevant to the drag & drop process, as the position of the mouse is reported to the application.
So, considering that this DND capability was working as designed for in the previous stable WineHQ release 7.0.2, and discovering that this DND capability doesn't work anymore as designed, in WineHQ version 8.0 and 8.0.1 (all in the stable channel), I consider this is a major regression bug, period.
In addition, I can confirm as well that dragging a data file in the menu bar [File Edit Find etc ...] happen to have it processed by the MapSource application, on my WineHQ 8.0.1 version. Still I consider that this way of doing it isn't what Drag & Drop was designed for, as you merely push to data file to the File Open menu.
So, for me it's still a standing bug.