[CSS Regions] border-radius on a region causes overflow to be hidden

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Rebecca Hauck]

Found in Version 25.0.1335.0 canary

1. Open the attached file in a browser

Result: 

The overflow text is hidden but should be visible as it should inherit the default value of overflow-x and overflow-y. The computedStyle shows as visible.

Comment out the border-radius on region-3 and the overflow text will again be visible.

Just as a control, I tested this scenario without regions with just a div + border-radius and the default overflow behavior is correct in that scenario

[Rebecca Hauck]

Created attachment 176845 [details]
test case to reproduce bug

[Mihnea Ovidenie]

Created attachment 184494 [details]
Patch

[Alexandru Chiculita]

Comment on attachment 184494 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=184494&action=review

> Source/WebCore/rendering/RenderReplaced.cpp:146
>              completelyClippedOut = true;

How does this work with the overflow of the RenderRegion? It looks like it will just not paint the overflow at all.

[Mihnea Ovidenie]

Created attachment 188929 [details]
Patch

The fix for https://bugs.webkit.org/show_bug.cgi?id=74132 also fixed this bug. I still think it deserves a test.

[Mihnea Ovidenie]

Created attachment 189539 [details]
Patch for landing

[WebKit Review Bot]

Comment on attachment 189539 [details]
Patch for landing

Clearing flags on attachment: 189539

Committed r143613: <http://trac.webkit.org/changeset/143613>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.