Please send me a PM with your Roku account email address, and include the serial number of the Roku device from Settings>System>About along with a summary of the issue you are experiencing. I'll be able to assist you further from there.
After my Roku Soundbar updated to 9.3 build 4178-95 I'm having problems with voice search. It will allow you to search by actor's name, but trying to MUTE, UP VOLUME, or change to particular app like Youtube Tv or Apple tv no go. My Roku tv took an update on the same day to 9.3 build 4182-30 and its voice search is working fine.
Can you please send me a PM with the following information:
-Roku Soundbar brand and model -serial number -device ID -current OS (these all can be found in Settings > System > About) -when did you start seeing this issue?
Please send me in a PM the above information, along with your Roku account email address and a screenshot of the About screen. I'll be able to pass along this information to the appropriate team to look further into.