Unstable sorting with jQuery UI 1.9.1 and above
|Reported by:||Marventus||Owned by:|
There seems to be an issue with jQuery UI (sortable) 1.9.1 and above that affects (rather severely) sorting of elements inside sortable source and target containers. I haven't seen this affect core, but since WP has been shipping with one of the affected versions (1.9.2) since 3.5, I'm worried about potential repercussions on WP theemes, plugins or projects relying on this script. For instance, Ultimate Tinymce, by Josh Lobe and myself (recently), has been affected by this.
Here is a testing platform I created on my server about the problem. Choosing any version of UI newer than 1.9.0 will result in said behavior.
Here is the ticket I submitted to jquery UI Trac and here the Commits to their github project.
Finally, as recommended by Andrew Nacin on the wp-forums list, here is a JSFiddle that reproduces the problem.
I am not really sure what to do about this, but I thought I should leave it on record just in case.