What does this type of operation mean?

On Jira, we are not editing the issue on the new screen. This is the same screen we just click on the input to edit the field, so why is the operation "Edit issue" represented here like a new screen?
It should be a new screen in case we choose the issue and then click on the button "Edit".
But this is not the way of editing an Issue (Task in my case) on Jira.
Could you explain it pls?