All right,
I have two problems related to the sound bar
Thank you for your help.
I have TCL 6-series 2018
Make sure you have the latest firmware (Settings/System/System update/Check now), and report the issues directly to Roku:
chat or email: https://support.roku.com/contactus/contact-options (choose setup/ultra/other/need more help?)
I have the latest version. I will do as you said.