993c7c4bec
The AudioClipEditor features a scroll bar that is a part of the canvas. Because scroll groups are at the top level of a canvas, the scroll bar is necessary within a scroll group, which causes it to get confused about the difference between its own position within the canvas and that of the scroll group. This commit introduces a per-Item flag, _scroll_translation, which is true by default. If false, the item will not have coordinates translated to reflect scroll group position.
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