I had this problem on my Roku 3. I never did find a fix and just quit trying to use private listening. Now the Roku 3 is in a seldom used guest room, and the two Roku sticks in the living room and bedroom provide glitchless private listening via the Roku apps on our mobile phones
- Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
- Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T
- TCL Roku TV 43S425/C107X, Ser X000001R60KV, wifi