Since I upgraded to this ZCO, I no longer been able to set any categories in tasks. If i drag and drop it to a categories or click on a categories, it will move back to none in a minute or two. Some of the existing tasks that has cateogories before (set using ZCO 5.0.13) has also been changed to none. Tried a full sync and it won't help. Wondering if anyone else experience this as well? Is it a bug? or something I can do th address it?