diff --git a/js/soft-limit.js b/js/soft-limit.js
index ea2bd33..f301175 100644
--- a/js/soft-limit.js
+++ b/js/soft-limit.js
@@ -23,7 +23,7 @@
    * Applies the soft limit UI feature to a specific facets list.
    */
   Drupal.facets.applySoftLimit = function (facet, limit, settings) {
-    var zero_based_limit = limit - 1;
+    var zero_based_limit = (limit - 1);
     var facetsList = $('ul[data-drupal-facet-id="' + facet + '"]');
 
     // Hide facets over the limit.
diff --git a/tests/src/FunctionalJavascript/WidgetJSTest.php b/tests/src/FunctionalJavascript/WidgetJSTest.php
index 752af7b..00b8299 100644
--- a/tests/src/FunctionalJavascript/WidgetJSTest.php
+++ b/tests/src/FunctionalJavascript/WidgetJSTest.php
@@ -63,6 +63,54 @@ class WidgetJSTest extends JavascriptTestBase {
   }
 
   /**
+   * Tests show more / less links.
+   */
+  public function testLinksShowMoreLess() {
+    $facet_storage = \Drupal::entityTypeManager()->getStorage('facets_facet');
+    $id = 'owl';
+
+    // Create and save a facet with a checkbox widget on the 'type' field.
+    $facet_storage->create([
+      'id' => $id,
+      'name' => strtoupper($id),
+      'url_alias' => $id,
+      'facet_source_id' => 'views_page:search_api_test_view__page_1',
+      'field_identifier' => 'type',
+      'empty_behavior' => ['behavior' => 'none'],
+      'widget' => [
+        'type' => 'links',
+        'config' => [
+          'show_numbers' => TRUE,
+          'soft_limit' => TRUE,
+          'soft_limit_settings' => [
+            'show_less_label' => 'Show less',
+            'show_more_label' => 'Show more',
+          ],
+        ],
+      ],
+      'processor_configs' => [
+        'url_processor_handler' => [
+          'processor_id' => 'url_processor_handler',
+          'weights' => ['pre_query' => -10, 'build' => -10],
+          'settings' => [],
+        ],
+      ],
+    ])->save();
+    $this->createBlock($id);
+
+    // Go to the views page.
+    $this->drupalGet('search-api-test-fulltext');
+
+    // Make sure the block is shown on the page.
+    $page = $this->getSession()->getPage();
+    $block = $page->findById('block-owl-block');
+    $block->isVisible();
+
+    // Make sure the show more / show less links are shown.
+    $this->assertSession()->linkExists('Show more');
+  }
+
+  /**
    * Tests checkbox widget.
    */
   public function testCheckboxWidget() {
diff --git a/tests/src/Unit/Plugin/widget/CheckboxWidgetTest.php b/tests/src/Unit/Plugin/widget/CheckboxWidgetTest.php
index d686439..dcf4575 100644
--- a/tests/src/Unit/Plugin/widget/CheckboxWidgetTest.php
+++ b/tests/src/Unit/Plugin/widget/CheckboxWidgetTest.php
@@ -85,7 +85,15 @@ class CheckboxWidgetTest extends UnitTestCase {
    */
   public function testDefaultConfiguration() {
     $default_config = $this->widget->defaultConfiguration();
-    $this->assertEquals(['show_numbers' => FALSE, 'soft_limit' => 0], $default_config);
+    $expected = [
+      'show_numbers' => FALSE,
+      'soft_limit' => 0,
+      'soft_limit_settings' => [
+        'show_less_label' => 'Show less',
+        'show_more_label' => 'Show more',
+      ],
+    ];
+    $this->assertEquals($expected, $default_config);
   }
 
   /**
diff --git a/tests/src/Unit/Plugin/widget/LinksWidgetTest.php b/tests/src/Unit/Plugin/widget/LinksWidgetTest.php
index 64f8764..6b462d6 100644
--- a/tests/src/Unit/Plugin/widget/LinksWidgetTest.php
+++ b/tests/src/Unit/Plugin/widget/LinksWidgetTest.php
@@ -216,7 +216,15 @@ class LinksWidgetTest extends UnitTestCase {
    */
   public function testDefaultConfiguration() {
     $default_config = $this->widget->defaultConfiguration();
-    $this->assertEquals(['show_numbers' => FALSE, 'soft_limit' => 0], $default_config);
+    $expected = [
+      'show_numbers' => FALSE,
+      'soft_limit' => 0,
+      'soft_limit_settings' => [
+        'show_less_label' => 'Show less',
+        'show_more_label' => 'Show more',
+      ],
+    ];
+    $this->assertEquals($expected, $default_config);
   }
 
   /**