GStreamer dashsink's BUG

gst-launch-1.0.exe filesrc location=ScreenRecord.mp4 ! qtdemux name=demuxer demuxer. ! h264parse ! dashsink mpd-filename=test.mpd mpd-root-path=DashSegments use-segment-list=true suggested-presentation-delay=200000 target-duration=1s name=sink

Why is there a problem with the mediaPresentationDuration in the .mpd file I generated using the command above? When playing with the GStreamer command, it only plays about one clip for the duration and it ends, and you need to manually change the mediaPresentationDuration field through a text editor to play all the generated ts clips
Is it a bug in the case where the use-segment-list property of dashsink is specified to be true?