Table: fix undefined popper

packages/table/src/table-body.js

@@ -220,7 +220,7 @@ export default {
 
         this.tooltipContent = cell.innerText;
         tooltip.referenceElm = cell;
-        tooltip.$refs.popper.style.display = 'none';
+        tooltip.$refs.popper && (tooltip.$refs.popper.style.display = 'none');
         tooltip.doDestroy();
         tooltip.setExpectedState(true);
         this.activateTooltip(tooltip);