Bug report

Regression introduced with 2025 Q3

TabStrip with DOM DataSource rendering does not update contentUrls when updated through the options

Reproduction of the problem

1. Open the following Telerik REPL
2. Navigate to the Script.js tab
3. Notice that the options are explicitly changed.
4. Click on the second tab.
5. Notice that the content remains unchanged.

Current behavior

TabStrip with DOM DataSource rendering does not update contentUrls when updated through the options.

Expected/desired behavior

TabStrip with DOM DataSource rendering should update contentUrls when updated through the options.

Workaround

<script>
   $(() => {
      const tabStrip = $("#tabstrip").data("kendoTabStrip");
      tabStrip._contentUrls[1] = `~/shared/web/tabstrip/ajax/ajaxcontent1.html`;
  });
</script>

Environment

• Kendo UI version: 2025.4.1217
• Browser: [all]