Please see the attached screen cap. It appears once I get over a certain number of cloned tasks, the tasks become linked and malfunction in a number of ways. (i.e. deleting the bottom one results in the top linked task being deleted.)
Note - It seems this behavior has something to do with cloning, as I am able to add more tasks without them becoming linked if I do so manually using the "Add New Task" button instead of cloning them.