There are a number of actions that lead away from the course editing page after which the user is returned. This includes adding/deleting/moving blocks, changing languages and turning editing on/off. Currently there is a problem with these actions. When the system tries to return the user to the course settings page, an error is given.

Replication steps:

1. Log in as admin/teacher
2. Navigate to a course
3. Click Edit settings under Course admin
4. Click Turn editing on/off from Course admin

Expected result: The user is returned to the course settings page

Actual result: An error is shown...

Either course id or category must be specified

More information about this error

Debug info:

Error code: needcoursecategroyid

Stack trace:

    line 467 of \lib\setuplib.php: moodle_exception thrown

    line 62 of \course\edit.php: call to print_error()

I think the return URL issue is a recent development after MDL-32184, however there was a problem prior to this that was caused by the page URL being incorrect.