Fix isStyleInFlow

packages/core/src/canvas/model/Frame.ts

@@ -200,6 +200,10 @@ export default class Frame extends ModuleModel<CanvasModule> {
     return this.get('component');
   }
 
+  getMainComponent(): Component {
+    return this.refComponent || this.root;
+  }
+
   getStyles() {
     return this.get('styles');
   }

packages/core/src/style_manager/model/PropertySelect.ts

@@ -3,7 +3,7 @@ import { ObjectAny } from '../../common';
 import { isDef } from '../../utils/mixins';
 import Property, { PropertyProps } from './Property';
 
-type SelectOption = {
+interface SelectOption {
   id: string;
   value?: string;
   label?: string;
@@ -12,7 +12,7 @@ type SelectOption = {
   title?: string;
   style?: string;
   propValue?: ObjectAny;
-};
+}
 
 /** @private */
 export interface PropertySelectProps extends PropertyProps {

packages/core/src/utils/sorter/SorterUtils.ts

@@ -144,7 +144,7 @@ export function closest(el: HTMLElement, selector: string): HTMLElement | undefi
  * @private
  */
 export function isStyleInFlow(el: HTMLElement, parent: HTMLElement): boolean {
-  if (isTextNode(el)) return false;
+  if (!el || isTextNode(el)) return false;
 
   const elementStyles = el.style || {};
   const $el = $(el);