Looping Audio in QuickTime Player

I've done several tests today and can now prove that I cannot correctly LOOP any audio file using QuickTime Player and selecting the LOOP feature. There is a definite glitch or gap at the beginning when the file is repeated. Is it possible to fix this option?

However, if I open the exact same file in Audacity, Transcribe, Gamesalad or Logic Pro X or Soundscape the file will correctly LOOP as it should.

The file has no extra gap at the beginning. I've tried all file formats including WAV and at 8bit, 16bit and 24bit. The same result on any type of audio file.

Is this normal?