Merge pull request #186589 in DEC/fineui from master to feature/x

* commit '38bd34cf2e4e371151c387eeb700541f6696bac7':
  update

src/base/list/virtualgrouplist.js

@@ -79,7 +79,7 @@ BI.VirtualGroupList = BI.inherit(BI.Widget, {
     },
 
     _isAutoHeight: function () {
-        return this.options.rowHeight === "auto";
+        return !BI.isNumber(this.options.rowHeight);
     },
 
     _renderMoreIf: function () {