Requires Ahem font. The content flows into a region (300px wide) what contains a shape-inside rectangle (200px wide) with 50px left offset.
The content should fill the shape-inside area out. The different paddings (top 10, right 20, bottom 30, left 40px) should be applied on the container. The padding shouldn't have any effect on the shape-inside's content.

Bug 115456: [CSS Regions][CSS Exclusions] Shape-inside on regions should respect region borders and paddings