I've only been using the Amazon Music for a few weeks now but I haven't encountered many bugs. It just doesn't seem overly feature rich. Although the one very annoying thing I have encountered is that my Alexa device doesn't seem to have a list of all of the possible Playlists. For a time, there was one called "Top Prime Hits". I could play it on my phone, but when I asked Alexa "Play Top Prime Hits" it couldn't find it. I now have to pair my phone, play it on my phone and set output to my Alexa. Seems to defeat the purpose of voice with Alexa.