Steps to reproduce the problem (using most recent release of Pelles C):
1. Create a new menu resource, with one top level menu (such as "File") and two second-level items on that menu (such as "Open" and "Save").
2. Save the new menu resource and close it, then re-open
3. Drag the "Save" item above the "Open" item, thus changing order of menu items
4. Close the menu resource
5. BUG >>>> Asterisk does not appear in resource editor window title, indicating that IDE did not recognize the change you just made to the menu resource. Close resource editor and you will not be prompted to save any changes. Re-open the same menu resource again and the change you made has disappeared.