1848446 - Firefox fails WPT css/css-grid/alignment/grid-align-baseline-table-001.html (and -002, -003)

Status: NEW

(Core :: Layout: Grid, defect)

Description

[Daniel Holbert [:dholbert]]

We fail subtests in these interop-2023-grid WPT tests:
https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-001.html
https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-002.html
https://wpt.fyi/results/css/css-grid/alignment/grid-align-baseline-table-003.html

wpt.live links:
http://wpt.live/css/css-grid/alignment/grid-align-baseline-table-001.html
http://wpt.live/css/css-grid/alignment/grid-align-baseline-table-002.html
http://wpt.live/css/css-grid/alignment/grid-align-baseline-table-003.html

As in bug 1848424, it looks like all of the failures are in cases where we're doing last baseline alignment, and we're failing to extract a last baseline from the grid item (which happens to be a table).

Some additional references:

• the results table in these tests are a bit broken-looking right now; that's not relevant to our pass/fail status but it'll be fixed in bug 1848445.
• these tests also use multiple table-captions which we don't support (bug 144517). I haven't checked whether that'll mean we'll still fail these tests or not when we fix the last baseline alignment issue; but it's possible we'll still fail a subtest or two due to that.

Comment 1

[Daniel Holbert [:dholbert]]

(In reply to Daniel Holbert [:dholbert] from comment #0)

As in bug 1848424, it looks like all of the failures are in cases where we're doing last baseline alignment, and we're failing to extract a last baseline from the grid item (which happens to be a table).

Note: it's possible that bug 1848424's fix will fix this bug too (or vice versa), if the issue is in some common grid code that's failing to correctly request a last baseline or something.

Comment 2

[Tiaan Louw]

-001 and -003 were fixed by bug 1876612