call 'attr' function if 'set' failed

src/runtime/internal/dom.ts

@@ -304,6 +304,7 @@ export function set_attributes(node: Element & ElementCSSInlineStyle, attributes
 		} else if (descriptors[key] && descriptors[key].set) {
 			if (node[key] !== attributes[key]) {
 				node[key] = attributes[key];
+				if (node[key] !== attributes[key]) attr(node, key, attributes[key]);
 			}
 		} else {
 			attr(node, key, attributes[key]);