I just bought a new android TV from sharp. I set up my playbar following the instructions in the app, including setting up the TV remote to control volume over the playbar. The remote works fine to *lower* the volume, but whenever I turn the volume *up* it switches the TV speakers back on and turns both the TV and the playbar volume up. I already have "external speakers" checked in the android TV settings and supposedly the TV speakers are off.

Any help?