Description of problem:
Drag and drop does work only on Gnome on Xorg session.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Open an archive with file-roller
2. Try drag and drop
Drag and drop does not work on wayland session. It looks like hover is behaving correctly and apps are reacting to hover when dragging, but dropping does not do anything.
Drag and drop should work just fine both on Wayland and Xorg sessions.
Tried this both on Bare metal and VM.
Proposed as a Blocker for 30-final by Fedora user frantisekz using the blocker tracking app because:
All applications that can be launched using the standard graphical mechanism of a release-blocking desktop after a default installation of that desktop must start successfully and withstand a basic functionality test.
Discussed during the 2018-12-17 blocker review meeting: 
The decision to delay the classification of this as a blocker bug was made as we don't have a clear consensus on this bug, so if it does not get resolved in the mean time, we'll discuss further and try to reach a clearer consensus at a later meeting.
This isn't a new issue, see this upstream bug:
The gist is that file-roller uses a different protocol than most applications (https://www.freedesktop.org/wiki/Specifications/XDS/), and that is not available on wayland.
Discussed during the 2019-02-11 blocker review meeting: 
The decision to punt (delay decision) was made:
"there still isn't a clear consensus on this (current vote total at +4 / -4) so we will delay once again, and try to ping desktop team for more info and hopefully a fix"
Looks like three more not a blocker votes.
(In reply to Chris Murphy from comment #5)
> Looks like three more not a blocker votes.
Marking as Rejected blocker based on feedback from desktop ml.
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