RenderRepaintBoundary toImage() only returns visible area data when working with ScrollView

[bigship]

I have a SingleChildScrollView, and it can scrolls horizontally. The child widget of the SingleChildScrollView is a Container widget with height: 125.0, width: 3000.0
the child widget of the Container is a Stack widget with children are all Draggable widgets wrapped by Positioned widget, so I can place these Draggable widgets at my will. But when I use RenderRepaintBoundary toImage() method to capture the content of ScrollView, only the visible area can be captured, not the full content of ScrollView.

[bigship]

It's my bad to mess up the Widgets hierarchy. I made a mistake to let RepaintBoundary be the parent of SingleChildScrollView, but it really needs to put RepaintBoundary as the child of the SingleChildScrollView to work properly.

Closed.

[github-actions]

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