Bug 249924

STR: (1) Load either of these testcases: Table using CSS styling: https://bugzilla.mozilla.org/attachment.cgi?id=9310034 Table using HTML parts: https://bugzilla.mozilla.org/attachment.cgi?id=9310036 EXPECTED RESULT: The rows should all be the same height. ACTUAL RESULT: The header/footer rows are only as tall as their content. The css-tables-3 spec "height distribution algorithm" says (in its last paragraph) to distribute any extra available height equally among all rows. There's no exception for rows that are in header/footer groups. Link: https://drafts.csswg.org/css-tables-3/#height-distribution-algorithm Blink has the same behavior as WebKit here, but probably just because this is a legacy WebKit table behavior that Blink inherited. All other browser engines -- Gecko (Firefox), EdgeHTML (Edge 16), Trident (IE11), and Presto (pre-Blink Opera) -- distribute the height equally among all the rows, including the header/footer rows. And that seems to be what the spec calls for, as well. Blink version of this bug report: https://bugs.chromium.org/p/chromium/issues/detail?id=1403995 This was also originally filed as a Firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1806961 (but as noted above, Firefox seems to be spec-compliant, and WebKit-derived rendering engines seem to be the odd ones out here; hence I've closed that bug as invalid and filed these Blink/WebKit bugs.)