Created attachment 601651 [details] tree view dead loop Filed from caserun (INSERT URL HERE) https://tcms-stage.englab.bne.redhat.com/plan/6853/copy-of-gedit-rhel6#treeview Version-Release number of selected component (if applicable): 3.8.0-2 on stage Steps to Reproduce: have entered into a plan. 1.Click the "Tree View" label. 2.Click "Chang parent node for plan XX" label. 3.Input a the child id as parent id. 4.Click "Ok" button. 5.Click "Submit" button. Actual results: The child is added as parent, and click up several times, it shows as a dead loop. Expected results: The system will warn the user that it is a child node, and could not be the parent. when adding the parent, and even if they could be parent for each other, the tree view should not be a dead loop.