72945 2011-11-22 05:37:47 -0800 Background image attachment changed to fixed in JS shows repaint errors 2012-03-22 23:03:43 -0700 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) Mac (Intel) OS X 10.6 RESOLVED DUPLICATE 78300 P2 Normal --- 1 ned webkit-unassigned davidbarr mitz shanestephens oldest_to_newest 507541 0 116211 ned 2011-11-22 05:37:47 -0800 Created attachment 116211 Reduced demo of the bug See reduced demo attached. Steps to Reproduce: - create div with background-image: scroll - in JS, set backgroundAttachment: fixed on the element - when you scroll, the display of the element is garbled or not updated. Additional Information: - This bug does not appear when the page is displayed inside an iframe. 507553 1 ned 2011-11-22 06:11:42 -0800 Additional Information (after spending 2 days on this): - setting overflow:hidden or overflow:auto on the element fixes the bug. -sigh- 586094 2 davidbarr 2012-03-22 23:03:43 -0700 This has been fixed in trunk, bisecting gives the range: http://trac.webkit.org/log/trunk/?rev=107355&stop_rev=107276 In particular, most likely fixed by: http://trac.webkit.org/changeset/107335/trunk Marking as duplicate of WK78300. *** This bug has been marked as a duplicate of bug 78300 *** 116211 2011-11-22 05:37:47 -0800 2011-11-22 05:37:47 -0800 Reduced demo of the bug webkit_repaint_bug_2.html text/html 1340 ned PCFET0NUWVBFIGh0bWw+CjxodG1sPgogICAgPGhlYWQ+CiAgICAgICAgPG1ldGEgY2hhcnNldD0i dXRmLTgiPgogICAgICAgIDx0aXRsZT5URVNUPC90aXRsZT4KICAgICAgICA8c3R5bGU+CiAgICAg ICAgICAgICN0YXJnZXQgewogICAgICAgICAgICAgICAgd2lkdGg6IDM0N3B4OwogICAgICAgICAg ICAgICAgaGVpZ2h0OiAyMjVweDsKICAgICAgICAgICAgICAgIGJhY2tncm91bmQtaW1hZ2U6IHVy bChodHRwOi8vZGV2LmJhbGRlc3Npbi5mci8yMDExL2doZXR0b19iZXRvbi5qcGcpOwogICAgICAg ICAgICAgICAgYmFja2dyb3VuZC1hdHRhY2htZW50OiBzY3JvbGw7CiAgICAgICAgICAgICAgICBi YWNrZ3JvdW5kLXBvc2l0aW9uOiB0b3AgbGVmdDsKICAgICAgICAgICAgfQogICAgICAgIDwvc3R5 bGU+CiAgICA8L2hlYWQ+CiAgICA8Ym9keT4KICAgICAgICA8ZGl2IGlkPSJ3cmFwcGVyIj4KICAg ICAgICAgICAgPHVsPgogICAgICAgICAgICAgICAgPGxpPlNjcm9sbCB1cCBhbmQgZG93biwgc2Vl IHRoYXQgdGhlIGltYWdlIGlzIHNldCBhcyBiYWNrZ3JvdW5kIG9mIGRpdiwgd2l0aCBiYWNrZ3Jv dW5kQXR0YWNobWVudCA9IHNjcm9sbDwvbGk+CiAgICAgICAgICAgICAgICA8bGk+PGEgaHJlZj0i IyIgb25jbGljaz0iZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ3RhcmdldCcpLnN0eWxlLmJhY2tn cm91bmRBdHRhY2htZW50ID0gJ2ZpeGVkJzsgcmV0dXJuIGZhbHNlOyI+TWFrZSBiYWNrZ3JvdW5k IGZpeGVkPC9hPjwvbGk+CiAgICAgICAgICAgICAgICA8bGk+U2Nyb2xsIHVwIGFuZCBkb3duIGFn YWluLCBzZWUgdGhhdCB0aGUgaW1hZ2UgaXMgZ2FyYmxlZCB3aGVuIGl0IGlzIHNjcm9sbGVkIG91 dCBvZiB0aGUgdmlzaWJsZSBhcmVhIGFuZCBiYWNrIGluIGFnYWluLjwvbGk+CiAgICAgICAgICAg IDwvdWw+CiAgICAgICAgICAgIAogICAgICAgICAgICAgICAgICAgIDxicj48YnI+PGJyPgoKICAg ICAgICAgICAgPGRpdiBpZD0idGFyZ2V0Ij48L2Rpdj4KCiAgICAgICAgICAgIDxicj48YnI+PGJy Pjxicj48YnI+PGJyPjxicj48YnI+CiAgICAgICAgICAgIDxicj48YnI+PGJyPjxicj48YnI+PGJy Pjxicj48YnI+CiAgICAgICAgICAgIDxicj48YnI+PGJyPjxicj48YnI+PGJyPjxicj48YnI+CiAg ICAgICAgICAgIDxicj48YnI+PGJyPjxicj48YnI+PGJyPjxicj48YnI+CiAgICAgICAgICAgIDxi cj48YnI+PGJyPjxicj48YnI+PGJyPjxicj48YnI+CiAgICAgICAgICAgIDxicj48YnI+PGJyPjxi cj48YnI+PGJyPjxicj48YnI+CiAgICAgICAgICAgIDxicj48YnI+PGJyPjxicj48YnI+PGJyPjxi cj48YnI+CiAgICAgICAgPC9kaXY+CjwvaHRtbD4=