When trying to create a child incident in the major incident workbench, the form shows without the Submit button:
Customized UI Action "Submit" on Global table.
Revert to the OOB UI Action configured on the global table. Make sure the action name is "sysverb_insert", otherwise it will hide the UI Action on the major incident workbench form.
UI Action "Save": /nav_to.do?uri=sys_ui_action.do?sys_id=42da42d00a0a0b340066377beb6dd099 .