@@ -, +, @@ --- opac/opac-shelves.pl | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/opac/opac-shelves.pl +++ a/opac/opac-shelves.pl @@ -275,7 +275,8 @@ if ( $op eq 'view' ) { prefetch => [ { 'biblionumber' => { 'biblioitems' => 'items' } } ], page => $page, rows => $rows, - order_by => { "-$direction" => $order_by }, + # See BZ 28561 Do not trigger Unable to collapse warning by sorting on items fields + $order_by =~ /items/ ? () : ( order_by => { "-$direction" => $order_by } ), } ); --