I saw the release notes on Wowza 3.6.3. There's an update about the HLS option attribute, EXT-X-PLAYLIST-TYPE that is added to the HTTPStreamer/Property string properties. It seemed to be that this option is disable by default as the attribute not added to the chunklist.
How to enable this property to make EXT-X-PLAYLIST-TYPE added to the chunklist?
I would set the playlist type to EVENT when doing live this then supports the draft specification. The drafts have changed over time and will continue to do so including/removing it may cause problems elsewhere.