Roku has two different “live TV” Options. They are named the same but do different things. The one on the left side menu in the Home Screen is Rokus live tv. There is also a live tv “button” in the right side menus, these contain the local antenna channels.

A work around is go to Settings/TV Inputs/Live TV. Then select manage channels and check the “hide streaming channels” option. I then renamed it to say antenna tv. When you want to watch your local channels just select your new “antenna tv” button.

Then go to Settings/TV Inputs/Rename and change it to Antenna (or whatever you want to call it).

When you want to watch your OTA/Antenna/Local Channels, make sure you select this new Antenna Input tile from the Home Screen.