Created attachment 170696 [details] screenshot Reproduction steps: 1. Browse to http://adobe.github.com/web-platform/samples/css-regions/basic/media-queries.html in Chrome Canary or WebKit Nightly on Win or Mac. 2. Make the browser window really narrow (phone size) so only one column is displayed. 3. Make the browser window wider again so multiple columns are shown again. Actual results: The text in in the right column is jumbled at the top. See attached image. Expected results: Text flows back into the columns on the right correctly. No jumbling. Workaround: If you refresh the page, then the text in the right columns looks correct.
Please try to test it with latest WebKit nightly. After the fix for https://bugs.webkit.org/show_bug.cgi?id=100749, i think it should work fine.
Confirmed fixed using WebKit Nightly b133272 on Mac 10.7.5. Setting to Resolved.