Thanks for posting in the Roku Community and following up regarding CEC issues with your Roku device.
Can you please specify the steps to reproduce the issue? How are you connecting your Roku device to your TV? Are you connecting any external audio devices in your home setup? When you see this issue occur, what is being shown on your TV screen?
With more detailed information, we be more than happy to assist you further. We look forward to hearing back from you.
Roku Community Moderator