Can confirm only with the test file you provided: None of my MP3s show that behavior, so I had a look at the file format and it seems to be a VBR MP3 (which I seldom use). So I tried again with a similar (320kb/s VBR) file and I can't reproduce with that either. I tried MP3s in various formats from various sources, encoded in different years with Wavelab/Fraunhofer, WaveLab/LAME and Reaper/LAME, no dice. :(