Problem with jQuery UI sortable in grid mode

Problem with jQuery UI sortable in grid mode

Hi,

I have found a very weird behaviour of jQuery UI sortable in grid mode. Initially I thought it has something to do with our implementation, but then I have found it on your example as well. It is using tollerance intersect. And a small modification regarding the size of the drop zone is added (the bug is present even without that)

The moving of the placeholder is supposed to happen after you reach at 50% of the next item. However, even if you in the very beginning of the next/previous item and you move your cursor a bit up and down it shifts the placeholder.

Please see the video here:
https://www.dropbox.com/s/gkybhk3e31uoi89/sortable_bug.webm?dl=0

Regards