So this patch series fixes this bug and three other regressions from bug 1308876. I did a little more testing; it turns out that this bug is the only one of the four that behaves differently as a function of whether `column-span` is enabled. In particular: * this bug's testcase, with `column-span` enabled, is fixed by [patch 2](https://phabricator.services.mozilla.com/D39582) on its own * this bug's testcase, with `column-span` disabled, is fixed by the combination of patch 2 and [patch 3](https://phabricator.services.mozilla.com/D39818) (both are needed) * bug 1406291 is fixed by patch 3 on its own * bug 1411799 is fixed by patch 2 and patch 3 (both are needed) * bug 1468654 is fixed by patch 2 on its own At a minimum I'll add more comments to the patches, although really I should probably add reftests for the other three bugs as well.
Bug 1420528 Comment 24 Edit History
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So this patch series fixes this bug and three other regressions from bug 1308876. I did a little more testing; it turns out that this bug is the only one of the four that behaves differently as a function of whether `column-span` is enabled. In particular: * this bug's testcase, with `column-span` enabled, is fixed by [patch 2](https://phabricator.services.mozilla.com/D39582) on its own * this bug's testcase, with `column-span` disabled, is fixed by the combination of patch 2 and [patch 3](https://phabricator.services.mozilla.com/D39818) (both are needed) * bug 1406291 is fixed by patch 3 on its own * bug 1411799 is fixed by patch 2 and patch 3 (both are needed) * bug 1468654 is fixed by patch 2 on its own At a minimum I'll add more comments to the commit messages, although really I should probably add reftests for the other three bugs as well.