[Plugin: NextGEN Gallery] Gallery sort order drag/drop weirdness

Hi all,

I’m using NGG1.9.3 on WP 3.3.1. When attempting to sort a gallery, the drag and drop behaviour is causing confusion. When selecting a thumbnail, a ghost thumbnail (the one I usually expect to appear directly underneath the cursor to show me where I’m dragging to) appears in the wrong place. I measured it with a screenshot – it’s just over 230px too far to the right, and around 100px too low. Which means that if I click the centre of a thumbnail, a ghost thumbnail appears, and the centre of this ghost is always 230px to the right of my cursor position and 100px below it – it stays in the same place relative to my mouse movement. The black cursor, meanwhile, the one that shows you where I’m about to drop the thumbnail, is roughly halfway between my mouse and the floating ghost, but it doesn’t behave as expected, because in a situation where I have a row of thumbnails A B C D E, I have to position the black cursor between D and E in order to drag a thumbnail into place between C and D. So it’s always 1 thumbnail too far to the right.

What’s going on? I don’t see any javascript errors, and exactly the same thing happens on Firefox 10 & 11 on a PC, Firefox 10 on a Mac and IE 8 on a PC. I don’t care so much, but it’s confusing the hell out of the site’s users, some of whom aren’t very computer literate anyway, so it’s enough of a challenge to get them to drag and drop at the best of times, never mind telling them to drag something somewhere counter-intuitive and where it doesn’t look like it’s supposed to be.

Any help gratefully received.

http://wordpress.org/extend/plugins/nextgen-gallery/