diff --git a/src/wp-includes/taxonomy.php b/src/wp-includes/taxonomy.php
index 06a9126616..cad8792c41 100644
--- a/src/wp-includes/taxonomy.php
+++ b/src/wp-includes/taxonomy.php
@@ -2046,20 +2046,23 @@ function wp_get_object_terms($object_ids, $taxonomies, $args = array()) {
 
 	if ( 'all' == $fields || 'all_with_object_id' == $fields ) {
 		$_terms = $wpdb->get_results( $query );
-		foreach ( $_terms as &$term )
-			$term = sanitize_term( $term, $taxonomy, 'raw' );
+		foreach ( $_terms as $key => $term ) {
+			$_terms[$key] = sanitize_term( $term, $taxonomy, 'raw' );
+		}
 		$terms = array_merge( $terms, $_terms );
 		update_term_cache( $terms );
 	} else if ( 'ids' == $fields || 'names' == $fields || 'slugs' == $fields ) {
 		$_terms = $wpdb->get_col( $query );
 		$_field = ( 'ids' == $fields ) ? 'term_id' : 'name';
-		foreach ( $_terms as &$term )
-			$term = sanitize_term_field( $_field, $term, $term, $taxonomy, 'raw' );
+		foreach ( $_terms as $key => $term ) {
+			$_terms[$key] = sanitize_term_field( $_field, $term, $term, $taxonomy, 'raw' );
+		}
 		$terms = array_merge( $terms, $_terms );
 	} else if ( 'tt_ids' == $fields ) {
 		$terms = $wpdb->get_col("SELECT tr.term_taxonomy_id FROM $wpdb->term_relationships AS tr INNER JOIN $wpdb->term_taxonomy AS tt ON tr.term_taxonomy_id = tt.term_taxonomy_id WHERE tr.object_id IN ($object_ids) AND tt.taxonomy IN ($taxonomies) $orderby $order");
-		foreach ( $terms as &$tt_id )
-			$tt_id = sanitize_term_field( 'term_taxonomy_id', $tt_id, 0, $taxonomy, 'raw' ); // 0 should be the term id, however is not needed when using raw context.
+		foreach ( $terms as $key => $tt_id ) {
+			$terms[$key] = sanitize_term_field( 'term_taxonomy_id', $tt_id, 0, $taxonomy, 'raw' ); // 0 should be the term id, however is not needed when using raw context.
+		}
 	}
 
 	if ( ! $terms )
diff --git a/tests/phpunit/tests/term.php b/tests/phpunit/tests/term.php
index 2a990d62be..dde2200d55 100644
--- a/tests/phpunit/tests/term.php
+++ b/tests/phpunit/tests/term.php
@@ -8,7 +8,7 @@ class Tests_Term extends WP_UnitTestCase {
 
 	function setUp() {
 		parent::setUp();
-		
+
 		_clean_term_filters();
 		// insert one term into every post taxonomy
 		// otherwise term_ids and term_taxonomy_ids might be identical, which could mask bugs
@@ -87,6 +87,26 @@ class Tests_Term extends WP_UnitTestCase {
 		$this->assertTrue( wp_delete_term($t['term_id'], $this->taxonomy) );
 	}
 
+	function test_get_object_terms() {
+		$post_id = $this->factory->post->create();
+		$terms_1 = array('foo', 'bar', 'baz');
+
+		wp_set_object_terms( $post_id, $terms_1, $this->taxonomy );
+		add_filter( 'wp_get_object_terms', array( $this, 'filter_get_object_terms' ) );
+		$terms = wp_get_object_terms( $post_id, $this->taxonomy );
+		remove_filter( 'wp_get_object_terms', array( $this, 'filter_get_object_terms' ) );
+		foreach ( $terms as $term ) {
+			$this->assertInternalType( 'object', $term );
+		}
+	}
+
+	function filter_get_object_terms( $terms ) {
+		// var_dump reveals an array of objects
+		$term_ids = wp_list_pluck( $terms, 'term_id' );
+		// last term is now an integer
+		return $terms;
+	}
+
 	function test_set_object_terms_by_id() {
 		$ids = $this->factory->post->create_many(5);