diff -u b/core/modules/filter/src/FilterFormatInterface.php b/core/modules/filter/src/FilterFormatInterface.php
--- b/core/modules/filter/src/FilterFormatInterface.php
+++ b/core/modules/filter/src/FilterFormatInterface.php
@@ -88,7 +88,7 @@
    * Removes a filter.
    *
    * @param string $instance_id
-   *   The ID of a filter plugin to be removed
+   *   The ID of a filter plugin to be removed.
    */
   public function removeFilter($instance_id);
 
only in patch2:
unchanged:
--- a/core/modules/filter/src/Tests/FilterAPITest.php
+++ b/core/modules/filter/src/Tests/FilterAPITest.php
@@ -386,4 +386,23 @@ public function assertFilterFormatViolation(ConstraintViolationListInterface $vi
     }
     $this->assertTrue($filter_format_violation_found, format_string('Validation violation for invalid value "%invalid_value" found', array('%invalid_value' => $invalid_value)));
   }
+
+  /**
+   * Tests that dependency removal works.
+   *
+   * Uninstalling a module that provides a filter should not remove a filter
+   * format that uses the filter.
+   */
+  public function testDependencyRemoval() {
+    $filter_format = entity_load('filter_format', 'filtered_html');
+    $filter_config = array(
+      'weight' => 10,
+      'status' => 1,
+    );
+    $filter_format->setFilterConfig('filter_test_restrict_tags_and_attributes', $filter_config);
+    $filter_format->save();
+    $this->uninstallModule('filter_test');
+    $filter_format = entity_load('filter_format', 'filtered_html');
+    $this->assertEqual('Drupal\filter\Entity\FilterFormat', get_class($filter_format));
+  }
 }