I had this problem. In the Outliner panel, I right-click on the actor I want to delete, click on the ‘copy selected actor file path’ button, paste it into the file explorer, go to the directory where the file is, and delete the file from there.
I had this problem. In the Outliner panel, I right-click on the actor I want to delete, click on the ‘copy selected actor file path’ button, paste it into the file explorer, go to the directory where the file is, and delete the file from there.