--- a/testing/marionette/harness/marionette_harness/tests/unit/test_navigation.py
+++ b/testing/marionette/harness/marionette_harness/tests/unit/test_navigation.py
@@ -379,17 +379,16 @@ class TestBackForwardNavigation(BaseNavi
     def test_file_url(self):
         test_pages = [
             {"url": self.test_page_remote},
             {"url": self.test_page_file_url},
             {"url": self.test_page_remote},
         ]
         self.run_bfcache_test(test_pages)
 
-    @skip("Causes crashes for JS GC (bug 1344863) and a11y (bug 1344868)")
     def test_frameset(self):
         test_pages = [
             {"url": self.marionette.absolute_url("frameset.html")},
             {"url": self.test_page_remote},
             {"url": self.marionette.absolute_url("frameset.html")},
         ]
         self.run_bfcache_test(test_pages)