71475 2011-11-03 08:20:18 -0700 REGRESSION: Scrolling doesn't update content area in nested overflow-y:auto divs 2011-11-07 16:56:38 -0800 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 71550 Regression P1 Normal --- 1 asvitkine jchaffraix hyatt jchaffraix mitz oldest_to_newest 495473 0 asvitkine 2011-11-03 08:20:18 -0700 Attached reduced testcase (from a PHPBB forum page) has two fixed height divs both with scroll bars. The inner div's content doesn't update when you scroll it via the inner scroll bar. According to Chromium's bisect-builds.py, this regressed between WebKit revisions 93556 and 93643. 495474 1 113496 asvitkine 2011-11-03 08:20:47 -0700 Created attachment 113496 Test case 495477 2 asvitkine 2011-11-03 08:23:02 -0700 http://svnsearch.org/svnsearch/repos/WEBKIT/search?from=93556&to=93643 495479 3 asvitkine 2011-11-03 08:25:49 -0700 Better link: http://trac.webkit.org/log/trunk/?rev=93643&stop_rev=93556&verbose=on 495483 4 asvitkine 2011-11-03 08:28:14 -0700 Suspecting it might be this change: "Reduce the amount of RenderLayer rectangles' update when scrolling" http://trac.webkit.org/changeset/93614/trunk 496377 5 jchaffraix 2011-11-04 12:08:41 -0700 Confirmed. Taking over as this is a bad regression. 496628 6 113750 jchaffraix 2011-11-04 21:22:49 -0700 Created attachment 113750 WIP change: undertested, likely too much recomputations, will think it over on Monday. 497600 7 jchaffraix 2011-11-07 16:56:38 -0800 webkit-patch attached the patch to the wrong bug (should have gone to bug 71550). Merging the 2 bugs together. *** This bug has been marked as a duplicate of bug 71550 *** 113496 2011-11-03 08:20:47 -0700 2011-11-03 08:20:47 -0700 Test case scrollbug.html text/html 1238 asvitkine PCFET0NUWVBFIGh0bWwgUFVCTElDICItLy9XM0MvL0RURCBYSFRNTCAxLjAgU3RyaWN0Ly9FTiIg Imh0dHA6Ly93d3cudzMub3JnL1RSL3hodG1sMS9EVEQveGh0bWwxLXN0cmljdC5kdGQiPgo8aHRt bD4KPGhlYWQ+PHRpdGxlPlRlc3Q8L3RpdGxlPjwvaGVhZD4KPGJvZHk+CjxkaXYgc3R5bGU9Imhl aWdodDogMzAwcHg7b3ZlcmZsb3cteTphdXRvO2JvcmRlcjogMnB4IHNvbGlkIGJsYWNrOyI+Cgk8 ZGl2IHN0eWxlPSJoZWlnaHQ6MzAwcHg7YmFja2dyb3VuZDojODg4O2JvcmRlcjoycHggc29saWQg Ymx1ZTsiPjwvZGl2PgoJCgk8ZGl2IHN0eWxlPSJoZWlnaHQ6IDIwMHB4OyBvdmVyZmxvdy15OiBh dXRvOyI+CgkJMjAxMS0xMS0wMyAxODowMjoyMSZuYnNwOyA8YnI+TXl0aCBJSSAzMi1CaXQgQnVp bGQgMzc2IHJ1bm5pbmcgdW5kZXIgTGludXggLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLTxicj5Mb2FkaW5nIHBvd2VydXNlci50eHQuLi4gbm90IGZvdW5kLjxi cj5TY2FubmluZyBmb3Igc29mdHdhcmUgZGV2aWNlcy4uLjxicj4mbmJzcDsgJm5ic3A7Rm91bmQg 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much recomputations, will think it over on Monday. bug-71475-20111104212248.patch text/plain 11695 jchaffraix U3VidmVyc2lvbiBSZXZpc2lvbjogOTkyNDcKZGlmZiAtLWdpdCBhL1NvdXJjZS9XZWJDb3JlL0No YW5nZUxvZyBiL1NvdXJjZS9XZWJDb3JlL0NoYW5nZUxvZwppbmRleCBlOGU0ZmMxZGEwMDkxNDEw Y2Y3ZjA0MTJkMzIwNTZjMjA5ZDc2YTU0Li4yZmIxMmU2ZDRlZjgzNzZlYTZhYzk3YWU4YjFjOWNk MjMwNzY3YjIzIDEwMDY0NAotLS0gYS9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKKysrIGIvU291 cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCkBAIC0xLDMgKzEsMjIgQEAKKzIwMTEtMTEtMDQgIEp1bGll biBDaGFmZnJhaXggIDxqY2hhZmZyYWl4QHdlYmtpdC5vcmc+CisKKyAgICAgICAgUkVHUkVTU0lP TjogU2Nyb2xsaW5nIGRvZXNuJ3QgdXBkYXRlIGNvbnRlbnQgYXJlYSBpbiBuZXN0ZWQgb3ZlcmZs b3cteTphdXRvIGRpdnMKKyAgICAgICAgaHR0cHM6Ly9idWdzLndlYmtpdC5vcmcvc2hvd19idWcu Y2dpP2lkPTcxNDc1CisgICAgICAgIFJFR1JFU1NJT04gKHI5MzYxNCk6IENvbnRlbnQgcmVtYWlu cyBkZXNwaXRlIHBhcmVudCBlbGVtZW50IGJlaW5nIHNjcm9sbGVkIG9mZiBwYWdlIHVzaW5nIGph dmFzY3JpcHQuCisgICAgICAgIGh0dHBzOi8vYnVncy53ZWJraXQub3JnL3Nob3dfYnVnLmNnaT9p 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