I have activated debugging via my wp-config file and there’s a warning at page Settings > General of a clean install of CP 2.4.1 :
Deprecated: Function wp_enqueue_script was called with an argument that is deprecated since version CP-2.2.0! The enqueued script jquery-ui-core has been deprecated.
Deprecated: Function wp_enqueue_script was called with an argument that is deprecated since version CP-2.2.0! The enqueued script jquery-ui-mouse has been deprecated.
Deprecated: Function wp_enqueue_script was called with an argument that is deprecated since version CP-2.2.0! The enqueued script jquery-ui-sortable has been deprecated.
So no warning at other pages, so far.
Is this caused by the Site Icon or Custom Login Image feature perghaps?
What you are seeing is fully expected when you are using Debugging.
If anything it indicates we may have more work to do removing dependency on these libraries in core but the files will only be removed on release of 3.0 at the earliest.