Rendering with a singe frame custom frame range in the MRQ with temporal sampling renders 2 frames instead

Temporal samples cause more than one frame to be rendered with a custom range of 1 frame

1. Create a new level sequence
2. Add a camera and camera cut track
3. Open the sequence in the movie render queue
4. In the output settings enable "Use custom playback range"
5. Set the custom start frame to 1 and the custom end frame to 2
6. Add an Anti Aliasing setting to the queue, and set the temporal sample count to 8
7. Render

RESULT

2 frames are output compared to the 1 frame when not using temporal samples