Occasionally items in Find Terms by name are not draggable

Occasionally (and randomly) items in Find Terms by name are not draggable. In the new hierarchical view, this most frequently occurs in high-levels folders that are parents of search results. (For example, search for asthma in Diagnoses and occasionally Disorders of Lipoid Metabolism is not draggable.) My WEBCLIENT-302 fix seems to make this slightly worse but is still extremely random.