--- a/dom/media/MediaDecoderStateMachine.cpp
+++ b/dom/media/MediaDecoderStateMachine.cpp
@@ -2699,29 +2699,28 @@ nsresult MediaDecoderStateMachine::Init(
     auto s = new DecodeMetadataState(self);
     self->mStateObj.reset(s);
     s->Enter();
   }));
 
   return NS_OK;
 }
 
-void MediaDecoderStateMachine::StopPlayback()
+void
+MediaDecoderStateMachine::StopPlayback()
 {
   MOZ_ASSERT(OnTaskQueue());
   DECODER_LOG("StopPlayback()");
 
   mOnPlaybackEvent.Notify(MediaEventType::PlaybackStopped);
 
   if (IsPlaying()) {
     mMediaSink->SetPlaying(false);
     MOZ_ASSERT(!IsPlaying());
   }
-
-  DispatchDecodeTasksIfNeeded();
 }
 
 void MediaDecoderStateMachine::MaybeStartPlayback()
 {
   MOZ_ASSERT(OnTaskQueue());
   // Should try to start playback only after decoding first frames.
   MOZ_ASSERT(mSentFirstFrameLoadedEvent);
   MOZ_ASSERT(mState == DECODER_STATE_DECODING ||