Error setting audio output route in BlackBerry 10 (BB10) version 10.2.1

[bennylp]

Setting audio output route in BB10 10.2.1 while the audio stream is running will cause running stream to fail with the following error:

18:33:25.013     bb10_dev.c !snd_pcm_plugin_read ERROR read = 4 required = 640
18:33:25.016     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
18:33:25.020     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
18:33:25.024     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
18:33:25.026     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
18:33:25.030     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
18:33:25.032     bb10_dev.c  snd_pcm_plugin_read ERROR read = -5 required = 640
  }}

This error only occurs with the latest BB10 OS, i.e. 10.2.1. It doesn't happen with earlier versions such as 10.2.0.415. This has been tested on a Z10 (and Q10 for the earlier OS versions).