The HTML rendering in the Check VU dialog doesn't support Javascript and any displayed information which depends on the previous page. Because NeoLoad works at protocol level, there's no way to improve the rendering of applications that contain client side logic.

So, it's a rendering issue, not a problem with your application. Check at HTML level (see first requests under the page) to see if the scenario was properly played back. The comparison feature helps you to find quickly the difference with the recorded content to see if the response is valid or contains an error.