To recreate: 1 - Browse to details page for a record 2 - Create or ensure the record has item group(s) 3 - Click New->New item 4. At the bottom of the page in the under Add to item group click the 'Options:' dropdown and select 'Create new item group'. 5. Add a name and click add item. 6. No item group is created.
*** This bug has been marked as a duplicate of bug 33639 ***