150168 2015-10-15 06:52:36 -0700 Scrolling iframe inside scrollable div does not work with trackpad 2017-03-03 05:45:59 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Mac OS X 10.11 RESOLVED FIXED InRadar P2 Normal --- 169129 1 anders wenson_hsieh bfulgham jonasw martin me simon.fraser webkit-bug-importer wenson_hsieh oldest_to_newest 1133459 0 263154 anders 2015-10-15 06:52:36 -0700 Created attachment 263154 Testcase source Open http://output.jsbin.com/zetevuyaqa in Safari 9 or nightly and try to scroll the iframe (picture) with a MacBook trackpad. The frame will not scroll. Scroll down the outer div to the bottom position and try to scroll the iframe again. The iframe can now be scrolled down, but not up. If the outer div's scroll position is not an any of the top or bottom endpoints the iframe can not be scrolled at all. It is not entirely consistent and sometimes the areas can be scrolled with quick and slightly angled scroll gestures. Using a mouse with a wheel works as expected. Other browsers (FF, Chrome) including Safari 8 does not have the problem with a trackpad. 1133805 1 anders 2015-10-16 02:37:55 -0700 Previous testpage apparently stopped working due to being created anonymously at JSBin. Here is a new one that hopefully will continue to work. https://output.jsbin.com/mudada It needs to be viewed on a full page since nesting inside other iframes won't show the problem. 1133849 2 webkit-bug-importer 2015-10-16 08:30:13 -0700 <rdar://problem/23143931> 1138739 3 martin 2015-11-02 15:41:10 -0800 I can verify that this is also happening on Safari 9.0.1 (10601.2.7.2) on OS X 10.10.5 as well as one of the recent nightlies r191902. 1140053 4 264957 wenson_hsieh 2015-11-06 14:39:40 -0800 Created attachment 264957 Patch 1140119 5 264957 bfulgham 2015-11-06 17:13:39 -0800 Comment on attachment 264957 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=264957&action=review r=me. I had a suggestion for improving the test (to avoid flakiness on the test bots). > LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow-expected.txt:2 > +The wrapper's scroll position is: 0 I would suggest these be PASS/FAIL results, to avoid flakiness due to different test machine resolutions and settings. > LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow.html:30 > + debug("The wrapper's scroll position is: " + wrapper.scrollTop); I would suggest something like: if (iframe.contentWindow.scrollY && !wrapper.scrollTop) { testPassed("The iframe scrolled but the wrapper did not."); } else { testFailed("The iframe's scroll position is: " + iframe.contentWindow.scrollY + ", and the wrapper's scroll position is: " + wrapper.scrollTop); } > LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow.html:50 > + eventSender.callAfterScrollingCompletes(checkForScroll); Someday we should make this into a test library function so we can remove all this duplicate code! :-) 1140126 6 264957 wenson_hsieh 2015-11-06 17:40:59 -0800 Comment on attachment 264957 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=264957&action=review >> LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow-expected.txt:2 >> +The wrapper's scroll position is: 0 > > I would suggest these be PASS/FAIL results, to avoid flakiness due to different test machine resolutions and settings. Will do. >> LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow.html:30 >> + debug("The wrapper's scroll position is: " + wrapper.scrollTop); > > I would suggest something like: > if (iframe.contentWindow.scrollY && !wrapper.scrollTop) { > testPassed("The iframe scrolled but the wrapper did not."); > } else { > testFailed("The iframe's scroll position is: " + iframe.contentWindow.scrollY + ", and the wrapper's scroll position is: " + wrapper.scrollTop); > } Got it. Fixed! >> LayoutTests/fast/scrolling/latching/scroll-iframe-in-overflow.html:50 >> + eventSender.callAfterScrollingCompletes(checkForScroll); > > Someday we should make this into a test library function so we can remove all this duplicate code! :-) I agree -- maybe something like sendMomentumScroll(positionX, positionY, dragCount, momentumCount, dragDeltaX, dragDeltaY, momentumDeltaX, momentumDeltaY, handleScrollingComplete) that handles everything in scrollTest() here. 1140137 7 wenson_hsieh 2015-11-06 18:32:28 -0800 Committed r192124: <http://trac.webkit.org/changeset/192124> 1282695 8 me 2017-03-02 05:40:35 -0800 Is it fixed yet? I've tried both Safari on the latest Mac OS Sierra and nightly build of webkit and scrolling down inside iframe doesn't work. Scrolling up works fine though. 1282708 9 anders 2017-03-02 06:52:06 -0800 Yes, works for me now, Safari on Sierra. Updated my last test case with a working image. 1282719 10 wenson_hsieh 2017-03-02 07:30:46 -0800 (In reply to comment #8) > Is it fixed yet? I've tried both Safari on the latest Mac OS Sierra and > nightly build of webkit and scrolling down inside iframe doesn't work. > Scrolling up works fine though. Hi Michael, Scrolling Anders' test case seems to be working for me as well. If you are still seeing an issue, could you file a followup bug and attach a video clip showing the problem you're seeing? Thanks! Wenson 1283138 11 me 2017-03-03 05:45:59 -0800 Hi Wenson, Anders, I've created followup bug report with minimal test case. Thanks. https://bugs.webkit.org/show_bug.cgi?id=169129 263154 2015-10-15 06:52:36 -0700 2015-10-15 06:52:36 -0700 Testcase source scroll.html text/html 447 anders PGhlYWQ+CiAgICA8c3R5bGUgdHlwZT0idGV4dC9jc3MiPgogICAgLm91dGVyIHsKICAgICAgICBo ZWlnaHQ6IDQ1MHB4OwogICAgICAgIG92ZXJmbG93OiBzY3JvbGw7CiAgICB9CiAgICAuaW5uZXIg ewogICAgICAgIC8qaGVpZ2h0OiA0NTBweDsqLwogICAgICAgIGJhY2tncm91bmQtY29sb3I6ICNi YmI7CiAgICAgICAgcGFkZGluZzogMTAwcHggMDsKICAgIH0KICAgIGlmcmFtZSB7CiAgICAgICAg aGVpZ2h0OiAzMDBweDsKICAgICAgICB3aWR0aDogNzIwcHg7CiAgICB9CiAgICA8L3N0eWxlPgo8 L2hlYWQ+Cjxib2R5PgogICAgPGRpdiBjbGFzcz0ib3V0ZXIiPgogICAgICAgIDxkaXYgY2xhc3M9 ImlubmVyIj4KICAgICAgICAgICAgPGlmcmFtZSBzcmM9Ii8vaS5pbWd1ci5jb20vZWVUdnZZYy5q cGciPjwvaWZyYW1lPgogICAgICAgIDwvZGl2PgogICAgPC9kaXY+CjwvYm9keT4K 264957 2015-11-06 14:39:40 -0800 2015-11-06 17:13:39 -0800 Patch bug-150168-20151106143929.patch text/plain 7056 wenson_hsieh U3VidmVyc2lvbiBSZXZpc2lvbjogMTkyMDIzCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D 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