请问解决了吗？我也遇到了

试试在modal初始化后调用 editor.md方法

$('#modal-add').on('shown.bs.modal', function () {
            editormd("editormd", {
                height: 260,
                // width: "100%",
                path: '/static/common/plugins/EditorMD/lib/',
                htmlDecode : "style,script,iframe|on*",
                imageUpload : true,
                imageFormats : ["jpg", "jpeg", "gif", "png", "bmp"],
                imageUploadURL : "url"
                // saveHTMLToTextarea : true
            });
        });