# Known Issues - Dragging and dropping work items on the map does not work does not work in IE11, Edge "non" Chrome with on-premise installations. We recommend using a different browser in this case. - A known *iframe* issue exists with TFS2017 and TFS2019 which causes SpecMap to not function properly and/or cannot be downloaded. We recommend upgrading to **TFS2020** to resolve this. - If you are adding a new work item via SpecMap, and you have custom rules applied to your work items from your Azure organization (such a mandatory description field) then your work item will fail to be created.