Note that we still don't have support for "fuzzy annotations". So our options here are to mark the test as random (or skipped), or to adjust the reference case to avoid whatever is causing the 1px fringe noted in comment 81.
Bug 1383451 Comment 88 Edit History
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Note that we still don't have support for "fuzzy annotations" in the WPT harness. So our options here are to mark the test as random (or skipped), or to adjust the reference case to avoid whatever is causing the 1px fringe noted in comment 81.