message: 3976 - fix react warning on rendering in react quick start
diff: @@ -14,6 +14,10 @@ export class SurveyRow extends SurveyElementBase<any, any> {
  constructor(props: any) {
  super(props);
  this.rootRef = React.createRef();
  + this.recalculateCss();
  + }
  + private recalculateCss() {
  + this.row.visibleElements.map(element => (element as Question).cssClasses);
  }
  protected getStateElement(): Base {
  return this.row;
  @@ -37,7 +41,7 @@ export class SurveyRow extends SurveyElementBase<any, any> {
  var elements = null;
  elements = this.row.visibleElements.map((element, index) => {
  const innerElement = this.createElement(element, index);
  - const css = (element as Question).cssClasses;
  + const css = (element as Question).cssClassesValue;
  return (
  <div
  className={css.questionWrapper}
  @@ -78,6 +82,7 @@ export class SurveyRow extends SurveyElementBase<any, any> {
  nextProps.row.isNeedRender = this.row.isNeedRender;
  this.stopLazyRendering();
  }
  + this.recalculateCss();
  return true;
  }
  private stopLazyRendering() {
  