Your template does not handle the tooltip, which is identified on this site using the .su-tooltip class, you can see in the browser how it looks on the site and my template. I think you need to save this text in IV, since the author can indicate an important description or explanation in this hint. In addition, this is the standard functionality of this site with similar classes: su-spoiler / su-quote, which your template converts to <details> and <aside>
For example, here in the tip added an excerpt with a description of the article from the law: https://www.gorodskievesti.ru/2018/09/19/podjeg-cherez-glazok/