I use the Android Plex player version 188.8.131.526.
My server is fully updated and running in Ubuntu.
I use "sync" on my server to send all of my audio files to my phone. This allows me to play local files on my phone without using data.
About a week ago this problem started. The player will only play 2 or 3 songs and then it will stop in the middle of a song for no reason. I have to start a new song in order for Plex to begin working again.
This bug makes the audio player unusable. If I am on a bike ride I would need to stop and get my phone out of my backpack. If I am in my car I would need to pick up my phone while I am driving to start a new song.
Besides this bug there are a few other things that I wish would work.
When I am looking at the local songs on my phone there is no "random" button unless you are looking at a specific album. I can not create or use any playlists in local music files. The fact that these options are missing and now the player will stop randomly makes the Plex music player unusable.
It works much better when it is connected to the server. You can select "random" when you are looking a an artist and it will play all of the artists songs on random. This option is missing for local content in the android app.
I do not have this bug when it is streaming music from the server.