Edit Trix image default caption

[mrleblanc101]

By default, when inserting an image using Trix, there is a <figcaption> with the image name and size.
There doesn't appear to be a way to remove or customize this.
Curently, to remove the caption, you need to insert a "space" inside the caption field.

[mrleblanc101]

Actually, even adding a "space" doesn't work, probably because it gets trimmed.
So I could hide the caption in CSS, but then it won't display when I need one.

[mrleblanc101]

This will hide the default caption in the front-end, but not Nova.

.attachment__caption:not(.attachment__caption--edited) { 
    display: none;
}

There is probably a way to inject custom CSS in Nova, but it doesn't really matter to me so I'll leave it like this.
I'll keep this open as a Feature Request, but feel free to mark as solved and close if this won't be implemented.