mp3 hls chunk packetizer not stable

I use Wowza for many vod/audio streaming origin application. My cdn will cache chunk from Wowza origin server as user request. With .mp4 and .m4a extension, Wowza work well. With .mp3 extension, problem is: - with simillar streaming url, chunk ts is change by session (although i use origin setting), i check it by md5sum value. - my cdn cache chunk from many session and then user hear error audio. This is my link: http://123.30.233.190/music_audio3/definst/mp3:media1/song/web1/8/65555/65555.mp3/playlist.m3u8 my audio file http://103.216.120.24:85/file/audio.mp3 All config,log of wowza is total4.zip. My wowza is 4.6.0. a.zip and a1.zip is chunk of similar streaming link at diffirent chrome tab.

Log files:

https://www.dropbox.com/s/iox48t61q71otny/a.zip?dl=0

https://www.dropbox.com/s/iox48t61q71otny/a.zip?dl=0

Did wowza fix this problem?