We’ve fixed the incorrect behavior of the Enable External Links option in our Social widgets (Social Feed, LinkedIn Feed, Tumblr Feed, VK Feed, RSS Feed, TikTok Feed) 
This setting is available only when Action on Post Click is set to None or Open in Popup.
Previously, if you turned off the Enable External Links setting and set Action on Post Click to Open in Social Media, where the Enable External Links setting is hidden, the Enable External Links remained off, and links with previews in posts were not displayed.
Now, when Action on Post Click is set to Open in Social Media, the Enable External Links setting will always be considered active, regardless of its previous state. In this mode, links with previews in posts will always be displayed.