Issue #3249710 by mglaman, frob, ericchew: hook_theme_suggestions_alter needs...

 */

function zurb_foundation_theme_suggestions_alter(&$suggestions, $variables, $hook) {

  if ($hook == 'menu' || $hook == 'block') {

    // Add cached for getVisibleBlocksPerRegion because this doesn't happen in

    // core this can be removed once

    // https://www.drupal.org/project/drupal/issues/2479459 is resolved.

    $all_blocks = &drupal_static(__FUNCTION__, []);

    if (empty($all_blocks)) {

      $all_blocks = \Drupal::service('block.repository')->getVisibleBlocksPerRegion();

    }

    // For menu blocks, check to see if the menu block is placed in an

    // off-canvas region, and if so use our custom template.

    $all_blocks = \Drupal::service('block.repository')->getVisibleBlocksPerRegion();

    $off_canvas_blocks = [];

    if (!empty($all_blocks['left_off_canvas'])) {

      $off_canvas_blocks += $all_blocks['left_off_canvas'];