When uploading a cover image for a trailer during app submission, the process fails with an "unsatisfied metadata" error, despite all required fields being filled. The error is accompanied by a JavaScript DOM error: "Node.removeChild: The node to be removed is not a child of this node" originating from the OCDevManagePlaceholder.react module, specifically within the OCDevManageAssetsVideoField.react.js and Video.react.js components. This issue occurs on the submission metadata assets page, preventing the completion of the submission workflow.