http://trac.webkit.org/changeset/156291 dropped the setNeedsDisplay that was previously moved under platformCALayerDidCreateTiles without moving it back into TileController. This means that when tiles resize, we don't repaint. <rdar://problem/15537608>
Created attachment 217722 [details] patch I'm going to try to make a test now.
Comment on attachment 217722 [details] patch View in context: https://bugs.webkit.org/attachment.cgi?id=217722&action=review > Source/WebCore/ChangeLog:8 > + Reviewed by NOBODY (OOPS!). > + > + * platform/graphics/ca/mac/TileController.mm: High level summary please. Why did r156291 break it?
http://trac.webkit.org/changeset/159732