X, formerly known as Twitter, is once again testing a change to the way it handles links on iOS so that the buttons to like, reply and repost will always be visible. Normally, when you click a link on X, the page opens and completely covers the original post. Apparently, this leads to fewer people clicking "like" or otherwise engaging with the content.
A good chunk of people probably just do not return to X at all after following an external link. So, the company is collapsing the original post to the bottom, instead of letting the web browser take over the whole screen and pushing further towards Elon Musk’s vision of X as an “everything app” that you never have to leave.
It's a common complaint among Musk and others that posts with links on X do not perform well. The post announcing this new feature seems to suggest that the reason is because of the way the interface leads you away from X, and thus lowers engagement.
Please select this link to read the complete article from The Verge.