Hi @caterina ,
This behavior is intentional, but not ideal. It should only navigation - such as the "Usage & Statics" page on a package, or the "List Projects" page which has a "Latest Release" column. As long as the Release is active, you'll still see new issues come up.
That's really what determines if a release is scanned or not - Active or not.
The reason for this... an SCA Release's "Release Number" is a free-form field, which means there are no sorting rules. So we can't practically/easily determine what the "highest" number. Instead, we just use the order in which it was created for display purposes.
Thanks,
Steve