There is a contradiction in your webcontainer item.
You say that the content height of your flickable is equal to the web_view height. And you say that the web_view height is equal to the webcontainer height. The only way to interpret this is that the flickable contentArea has the same height as its parent which should in exactly the behaviour you describe. I suspect it will work if you don’t explicitly override the preferred height of the web_view
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