Created attachment 119648 [details]
If the last region in a region chain can not display all of the content in a named flow, and the region has overflow:visible set, and the content runs off the end of the current window, you can't scroll the window to view the content.
Created attachment 203361 [details]
Attempt to produce a ref test.
I tried to create a ref test for this. From the original comment #0, I assumed that the scrollbars should appear in the document.
Still repros on today's nightly (r151543)
Created attachment 209449 [details]
The bug was fixed with https://bugs.webkit.org/show_bug.cgi?id=118526 . Close the bug after a test lands.
Comment on attachment 209449 [details]
Clearing flags on attachment: 209449
Committed r154483: <http://trac.webkit.org/changeset/154483>
All reviewed patches have been landed. Closing bug.