The partial within this minimal example splits a slice of pages into a slice of pairs of pages.
This works with Hugo v0.113.0 and earlier but fails with Hugo v0.114.0 up to (at least) v0.119.0 with the following error:
execute of template failed: template: _default/list.html:10:16
executing "main" at <partial "group_in_pairs" $allPages>:
error calling partial: "/home/me/hugo_issue_slices/layouts/partials/group_in_pairs.html:13:27":
execute of template failed: template: partials/group_in_pairs.html:13:27:
executing "partials/group_in_pairs.html" at <append (slice $currGroup)>:
error calling append:
cannot append slice of page.Pages to slice of page.Page