[BUGFIX] Ignore language comparison mode in grid span calculation

Classes/Backend/Grid/ContainerGrid.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+namespace B13\Container\Backend\Grid;
+
+/*
+ * This file is part of TYPO3 CMS-based extension "container" by b13.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ */
+
+use TYPO3\CMS\Backend\View\BackendLayout\Grid\Grid;
+
+class ContainerGrid extends Grid
+{
+    public function getSpan(): int
+    {
+        if (!isset($this->rows[0])) {
+            return 1;
+        }
+        $span = 0;
+        foreach ($this->rows[0]->getColumns() as $column) {
+            $span += $column->getColSpan();
+        }
+        return $span ?: 1;
+    }
+}

Classes/Backend/Grid/ContainerGridColumn.php

@@ -64,4 +64,14 @@ public function getNewContentUrl(): string
         }
         return $this->newContentUrl;
     }
+
+    public function getColSpan(): int
+    {
+        return $this->colSpan;
+    }
+
+    public function getRowSpan(): int
+    {
+        return $this->rowSpan;
+    }
 }

Classes/Backend/Preview/GridRenderer.php

@@ -12,6 +12,7 @@
  * of the License, or any later version.
  */
 
+use B13\Container\Backend\Grid\ContainerGrid;
 use B13\Container\Backend\Grid\ContainerGridColumn;
 use B13\Container\Backend\Grid\ContainerGridColumnItem;
 use B13\Container\Backend\Service\NewContentUrlBuilder;
@@ -21,7 +22,6 @@
 use B13\Container\Tca\Registry;
 use Psr\EventDispatcher\EventDispatcherInterface;
 use TYPO3\CMS\Backend\Utility\BackendUtility;
-use TYPO3\CMS\Backend\View\BackendLayout\Grid\Grid;
 use TYPO3\CMS\Backend\View\BackendLayout\Grid\GridRow;
 use TYPO3\CMS\Backend\View\PageLayoutContext;
 use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
@@ -43,7 +43,7 @@ public function __construct(
 
     public function renderGrid(array $record, PageLayoutContext $context): string
     {
-        $grid = GeneralUtility::makeInstance(Grid::class, $context);
+        $grid = GeneralUtility::makeInstance(ContainerGrid::class, $context);
         try {
             $container = $this->containerFactory->buildContainer((int)$record['uid']);
         } catch (Exception $e) {