1797634 - [wpt-sync] Sync PR 36675 - Table container separation

Status: RESOLVED INVALID

(Core :: Layout, task, P4)

Description

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

Sync web-platform-tests PR 36675 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/36675
Details from upstream follow.

Alison Maher <[e-mail]> wrote:

Table container separation

If we have a nested multicol with a table inside the inner multicol,
we can run into issues if the table has a repeated header that
has a forced break.

When column balancing, headers are not allowed to be repeated, so
the forced break will be honored. And since we only check if there
was repeated content when determining container separation, we can
end up trying to break before content that broke in a previous
outer column.

To fix this, update the container separation check to also check if
there is a child break token.

Bug: 1375179
Change-Id: I6996ea36f9e61d0d7910dacf4904a3cbeb718064

Reviewed-on: https://chromium-review.googlesource.com/3982138
WPT-Export-Revision: 20e3655bd305e542d02420e28569f69936603ce8