I tried to use Microsoft Jira Connector's Create a new issue (V3) action. The problem is that this action has only three inputs: Jira instance, Project, and Issue Type ID, and no input for the "item" parameter. Consequently, Copilot Studio returns an error when attempting to execute this action: "The parameter with name ‘item’ is required to call the connector. Error Code: ConnectorActionBadRequest."
The item field has disappeared again.
Update: The 'item' input field is now visible and accessible.