It should return to the request.
Created attachment 187853 [details] [review] Bug 41009: Return to 'Manage request' page after editing Test plan (before applying patch): 1) Enable ILLModule 2) Create a new ILL request, visit: <staff_url>/cgi-bin/koha/ill/ill-requests.pl?method=create&backend=Standard 3) After creating the request, you're on the 'Manage request' page. 4) Click 'Edit request'. Click 'Submit'. Notice you're redirected to the list table. 5) Apply patch. Repeat. Notice you're sent to the ILL request 'Manage request' page.