1653723 - New wpt failures in /css/css-position/position-relative-005.html

Status: NEW

(Core :: Layout: Positioned, defect, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Syncing wpt PR 24648 found new untriaged test failures in CI

Tests Affected

Firefox-only failures

/css/css-position/position-relative-005.html: FAIL

CI Results

Gecko CI (Treeherder)
GitHub PR Head

Notes

These updates will be on mozilla-central once bug 1653673 lands.

Note: this bug is for tracking fixing the issues and is not
owned by the wpt sync bot.

This bug is linked to the relevant tests by an annotation in
https://github.com/web-platform-tests/wpt-metadata. These annotations
can be edited using the wpt interop dashboard
https://jgraham.github.io/wptdash/

If this bug is split into multiple bugs, please also update the
annotations, otherwise we are unable to track which wpt issues are
already triaged. Resolving as duplicate or closing this issue should
be cause the bot to automatically update or remove the annotation.

Comment 1

[Mats Palmgren (inactive)]

We actually pass what the test is attempting to test (dynamically changing the percentage basis).
We fail it for unrelated reasons.

Comment 2

[Mats Palmgren (inactive)]

Attachment: Testcase #1

Here's a reduced testcase demonstrating the issue. Gecko places the red block vertically aligned with the top of the pink box next to it. The red block has an abs.pos. with a "static position".

The green block demonstrates where it would have been placed with position:static.

Comment 3

[Mats Palmgren (inactive)]

I seem to recall that the spec gives significant leeway in how the static position should be calculated though, so it's probably not a good idea for this WPT test to depend on it since it mandates Chrome's current implementation.