Question: Filling (size) in Webview

In Webview component, what is the size called Filling. Can someone please explain this?

It’s presented with the icon 1:1 which suggests square but often means “Original Size” in other components. In Webview it seems to just be square, which is no different from the Square size choice. It would be nice if this could detect the max height of all elements on the page and only give you a screen that high. Or perhaps there is already a way to send that info to the component?

It would be amazing for building our own custom components delivered from our own sites (even third-party components that would require a license to unlock) to extend Glide a bit more. Currently the shortest size is (3:1) is way too tall to look good as a component.