Hi there, I have problems with jquery ui sortable plugin behavior on complex structure of nesting <ul>'s tags. It works, but in a really funky way. You need to move mouse around (or over existing items) of the area where are you going to drop sortable item. Otherwise you'll get no visible placeholder indicating that you can drop it. I believe it worked before when I had 3-4 <ul> without nesting, but since I've got to more complex structure, I started to experience problems with dragging of sortable items,
Here is the code I use to setup sortable plugin (it applies to every sortable element):
element.sortable({
        connectWith: '.connectedSortable',
        placeholder: 'kanban-state-highlight',
        tolerance: 'intersect',
        scroll: true,
        scrollSensitivity: 20,
        scrollSpeed: 60,
        items: 'li:not(:has(.cardMoveProgress))'
    });

Any suggestions what can I do to increse drop accuracy and better placeholder apperance ?
Thanks.