Better fix.

Source/Engine/Particles/ParticleEffect.cpp

@@ -283,6 +283,10 @@ void ParticleEffect::UpdateSimulation(bool singleFrame)
 
 void ParticleEffect::Play()
 {
+    // Reset simulation when play is called and particle system is time is complete - ex. if IsLooping is false and simulation is complete
+    if (!IsLooping && Instance.Time >= (float)ParticleSystem->DurationFrames / ParticleSystem->FramesPerSecond)
+        ResetSimulation();
+
     _isPlaying = true;
 }
 

Source/Engine/Particles/Particles.cpp

@@ -1318,7 +1318,8 @@ void ParticlesSystem::Job(int32 index)
                     emitterInstance.Buffer = nullptr;
                 }
             }
-            effect->Stop();
+            // Set is playing to false because it is not playing anymore.
+            effect->Pause();
             return;
         }
     }