fix dropdown btn

src/components/Dropdown.jsx

@@ -34,6 +34,7 @@ const DropdownMenu = ({
 	return (
 		<div className="dropdown">
 			<button
+				type="button"
 				ref={triggerRef}
 				onClick={toggleDropdown}
 				aria-haspopup="true"

src/components/app.jsx

@@ -1248,7 +1248,6 @@ export default class App extends Component {
 	saveHtmlBtnClickHandler(inlineAssets) {
 		saveAsHtml(this.state.currentItem, { inlineAssets });
 		trackEvent('ui', 'saveHtmlClick');
-		e.preventDefault();
 	}
 	runBtnClickHandler() {
 		this.contentWrap.setPreviewContent(true, true);