That is not a Caption. That is the Title from the Content Tab. It is displaying properly above everything else.
The Caption is from the Images and Links Tab. A Caption is text that displays below an image. It is usually formatted uniquely to differentiate between the other text on the page.
Captions are built into Joomla. But, often are not displayed. In the case of this article the text in the Caption field is: "Susa was safe and secure before the maniacal Haman appeared."
Thank you for entering into this discussion. BTW, I just now created a vanilla Joomla 4 site at my host in order to demonstrate where Captions display:
https://drive.google.com/file/d/1BjUB7HhridD2IS8UzXQyFY5ouvdQVOVO/view?usp=share_link
In this case the text that is displaying below the image is coming from the Image Caption field. It says "This is an Image Caption That Should Be Displaying"
You can see the page at https://captiontest.cloudaccess.host/index.php/article-with-caption-test
Sean Carney