Hello everybody,
here running Moodle 2.8.8 (Build: 20150914); plugin qtype_gapfill version 2016100801 release 1.91. Theme Formal White.
We find an issue if: 1) a gaffill question is set to dragdrop mode AND 2) the quiz it belongs to is set to Browser security->"Fullscreen popup with some javascript security".
What happens then, is that the draggable item can be picked and dragged, but it can't be dropped anymore: it will just stick forever to the pointer. Only option, seems to abort the test by closing the window.
This only happens if the user has "Student" privileges; if I preview the same test as Teacher (or as Administrator), dragdrop works as expected.
Also, it only happens if Browser security is set to "Fullscreen popup with some javascript security". If Browser security is set to "None", then, even for a Student account, dragdrop works as expected.
(Verified at least in Firefox and IE; I have been told, in Chrome as well, but I can't chek myself now).
If anybody would be so kind as to look into it, I would be more than willing to provide an account for checking.
Thanks, GianCarlo De Pol