1. Make sure the environments are synchronized - the files, js, rich text in Sitecore.
 2. Compare the view-source for the two pages to help find the discrepancy
 3. Try using `innerHTML` instead of `innerText`
 4. Consider refactoring this - use `@Html.Sitecore().Field("AudiologiInfoBox")` inside the `InfoBoxText` div instead of using jQuery.