Tested with APEX 22.2 on-premise and on apex.oracle.com
Steps to reproduce:
- Create a page with a classic report, select “Media List” as the template type
- Set “select ename as list_title, job as list_text from emp” as the region source
- Make the LIST_TITLE column a link to a second page, which is a popup
- Create a Dynamic Action on “Dialog Closed” event, with an action to Refresh the classic report region
- On the popup page, add a submit button and a process of type “Close Dialog” that runs when the button is clicked
Result:
In console: “Server debug log message written: View Identifier = nnnnnn, Level = ERROR.”
In the APEX debug log: "ERR-1002 Unable to find item ID for item "LINK" in application "nnnn"."

I'm not sure where this “LINK” item is coming from, I see there is a Row Template 1 Expression ":LINK is not null" on the Media List template, could that be it?