diff --git a/dom/media/TextTrack.cpp b/dom/media/TextTrack.cpp
index 470a8b2a9259..6155e58b3bc2 100644
--- a/dom/media/TextTrack.cpp
+++ b/dom/media/TextTrack.cpp
@@ -318,6 +318,13 @@ void TextTrack::GetCurrentCuesAndOtherCues(
                  cue->StartTime(), cue->EndTime());
       aCurrentCues->AddCue(*cue);
     } else {
+      // Negative length cue, which is possible because user can set cue's end
+      // time arbitrary.
+      if (cue->EndTime() < cue->StartTime()) {
+        WEBVTT_LOG("[BAD TIME] skip cue %p [%f:%f] with negative length",
+                   cue, cue->StartTime(), cue->EndTime());
+        continue;
+      }
       media::TimeInterval cueInterval(
           media::TimeUnit::FromSeconds(cue->StartTime()),
           media::TimeUnit::FromSeconds(cue->EndTime()));
diff --git a/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html.ini b/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html.ini
deleted file mode 100644
index 545121b12d0b..000000000000
--- a/testing/web-platform/meta/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html.ini
+++ /dev/null
@@ -1,6 +0,0 @@
-[track-cues-missed.html]
-  disabled:
-    if (os == 'win' and processor == 'aarch64'): https://bugzilla.mozilla.org/show_bug.cgi?id=1538303
-  [Events are triggered for missed (skipped) cues during normal playback]
-    expected: FAIL
-
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html
index 043c941b123b..2acae212d231 100644
--- a/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html
+++ b/testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed.html
@@ -45,7 +45,7 @@
             video.play();
         }
 
-        function cueEnteredOrExited() {
+        function cueEnteredOrExited(event) {
             var currentCue = event.target;
             assert_equals(testTrack.track.cues.getCueById(cueCount).text, currentCue.text);
             assert_equals(currentCue.id, cueCount.toString());
@@ -56,4 +56,4 @@
 
     });
     </script>
-</video>
\ No newline at end of file
+</video>