Assume you have the following case: <div id="container" style="overflow: auto"> <!-- content to be flowed in regions --> <div id="article" style="-webkit-flow-into: flow"></div> <!-- regions that will fragment the content --> <div id="region" style="-webkit-flow-from: flow"></div> <div id="region2" style="-webkit-flow-from: flow"></div> <div id="region3" style="-webkit-flow-from: flow"></div> <div id="region4" style="-webkit-flow-from: flow"></div> </div> Assume that there is enough content in the flow to fill the regions and the size of the container is less than the size of regions so that the container gets vertical scrollbar. Assume also that the content is editable. Click in the first region and move the cursor down with the keyboard. At some point, the cursor will disappear and the content will not be scrolled into the view. There *should be* a possibility to scroll the container content with the keyboard, the cursor should be visible to the user.
CSS Regions were removed in Bug 174978.