message: Add key prop to SurveyQuestionMultipleText
diff: @@ -35,20 +35,19 @@ export class SurveyQuestionMultipleText extends SurveyQuestionElementBase {
  for (var i = 0; i < items.length; i++) {
  var item = items[i];
  var itemTitle = this.renderLocString(item.locTitle);
  - var spaceSpan = <span>&nbsp;</span>;
  var spans = [];
  var ed = item.editor;
  if (!!ed.isRequireTextOnStart || ed.isRequireTextBeforeTitle) {
  spans.push(
  - <span className={cssClasses.requiredText}>{ed.requiredText}</span>
  + <span key={"requiredTextBefore" + i} className={cssClasses.requiredText}>{ed.requiredText}</span>
  );
  - spans.push(spaceSpan);
  + spans.push(<span key={"spaceBefore" + i}>&nbsp;</span>);
  }
  - spans.push(<span className={cssClasses.itemTitle}>{itemTitle}</span>);
  + spans.push(<span key={"itemTitle" + i} className={cssClasses.itemTitle}>{itemTitle}</span>);
  if (!!ed.isRequireTextAfterTitle) {
  - spans.push(spaceSpan);
  + spans.push(<span key={"spaceB" + i}>&nbsp;</span>);
  spans.push(
  - <span className={cssClasses.requiredText}>{ed.requiredText}</span>
  + <span key={"requiredTextAfter" + i} className={cssClasses.requiredText}>{ed.requiredText}</span>
  );
  }
  tds.push(
  