Context Editing Mode: Regions disappear.

Hi, I'm using Spaces3/Context3/Admin with the Cube theme. When I go into Context editing mode, droppable links appear in their corresponding regions properly, when I start dragging a block around, every region it touches makes the droppable link disappear, as it should. But, if I keep dragging the block out of that region and to another the first droppable link never reappears, even after the block has left the region.

I'm using JQuery 1.2, jQueryUI 1.6.

It's not a huge issue, but makes putting blocks on pages difficult if you miss an empty region the first time, as the region will disappear and not reappear until you drop the block into another region, at which time the regions will all reappear.