[Audio] Switch to HDMI not saving in Hooper 4.2.1

[dus10]

My Raspberry Pi is connected to a tv via hdmi. Every time I boot up Kano (v4.2.1) there is no audio. I go to the settings main menu and the audio section says it is set to hdmi. However, when I click to open the audio setting the radio button is set to Speaker and not TV. I switch it to TV and the audio then begins to work on the TV. I reboot when it asks me to but the same experience happens again. The setting to make the TV (hdmi) the default audio never saves correctly.

Raspberry Pi 3 Model B Rev 1.2 a22082 (3b)