In Sitefinity, some widgets using reusable content opens in the same page when there is a button or link to be clicked. This is a default setting. While this works for some pages, it can cause some visual issues depending on the content on your page. This can affect widgets like People, Events, Newsroom and Calendars.
If you have more than one of the same reusable content widgets on the page, the details of that item will duplicate for every widget instance once it is click on. For example, a site builder displaying the People widget multiple times on a page will cause the profile to display on the page several times when a specific profile is clicked.
Another example is if a widget is on a page that has a lot of other content. When someone click on the items, the content will automatically display on that page along with the original page content. This could make the content look crowded. For example, an event widget on the homepage will display all the event content along with the homepage content when selected.