It appears this is still a repeatable issue as of 11.5.0 build 4235-46
Roku engineers please give it a try.
Hi @Ursa,
We appreciate you reaching out to the Roku community!
We'd like to take a closer look to see if there's anything else we can suggest to help. I have a few questions to better understand the behavior you are seeing:
With more detailed information, we will be able to assist you further.
Best regards,
Mary
Infuriatingly, I wrote a long response to your message which is not showing on that article. I'll try once more. (I'm using Firefox in case that is relevant to the website issues, I am pressing the reply button in the topic)
In case this answer gets lost, this thread was supposed to be a reply to https://community.roku.com/t5/Solving-playback-issues/Just-auto-update-on-Ultra-4670X/m-p/837708#M46...
...which was supposed to be a reply to: https://community.roku.com/t5/Solving-playback-issues/Just-auto-update-to-10-5-0-4208-46-on-Ultra-46...
To answer your questions:
1. When I activated night mode from the roku remote. In any channel this goes from 5.1 PCM -> 2.0 PCM. But can get stuck in 2.0 PCM if you leave the channel before turning night mode off.
2. yes.
3. N/A
4. Trying to get back to 5.1 is easy if you turn it off straight away, but if you leave a channel and start another it can get stuck, where turning off night mode leaves the unit sending 2.0 PCM until a reboot. Netflix seems particularly prone to this.
Turning off night mode and rebooting the unit seems to fix the issue.
HTH