152821 2016-01-06 17:19:38 -0800 REGRESSION(r189947): [GTK] css-multicol-1 tests failing 2020-01-15 06:28:14 -0800 1 1 1 Unclassified WebKit Layout and Rendering Other PC Linux RESOLVED DUPLICATE 204671 P2 Normal --- 1 mcatanzaro webkit-unassigned bugs-noreply clopez mcatanzaro simon.fraser oldest_to_newest 1153288 0 mcatanzaro 2016-01-06 17:19:38 -0800 The following tests have been failing for GTK since r188947: imported/w3c/css/css-multicol-1/multicol-basic-001.html [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-basic-002.html [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-basic-003.html [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-basic-004.html [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-rule-002.xht [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-rule-px-001.xht [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-rule-stacking-001.xht [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-shorthand-001.xht [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-span-all-block-sibling-003.xht [ ImageOnlyFailure ] imported/w3c/css/css-multicol-1/multicol-span-all-margin-nested-firstchild-001.xht [ ImageOnlyFailure ] I should note that all the .xht tests print the word "FAIL FAIL FAIL" repeatedly, but the expected results include "FAIL FAIL FAIL" as well, so that problem is unrelated to this bug. That is probably that we are treating the .xht files as HTML rather than XHTML, bug #152455. In this bug I am only concerned with the pixel differences introduced by r188947. I have no clue why r188947 fixed pixel differences on Macs but introduced them on Linux. 1153294 1 simon.fraser 2016-01-06 17:21:50 -0800 Do you mean http://trac.webkit.org/changeset/188947? That's an accessibility change. 1153295 2 mcatanzaro 2016-01-06 17:23:24 -0800 The revision number in my first post is a typo. These failures were introduced by r189947, not r188947. 1213928 3 mcatanzaro 2016-07-23 11:06:45 -0700 These tests were actually flaky, but only passed rarely. Since enabling threaded compositor, they're passing about half the time. Updating expectations accordingly. 1606900 4 clopez 2020-01-15 06:28:14 -0800 The failures on this tests were caused because of antialiasing the Ahem font. Once antialiasing its disabled for Ahem, the tests pass. *** This bug has been marked as a duplicate of bug 204671 ***