I'm not sure if this should be posted here, or in the iOS/TVOS section, considering it is a server side setting, I decided to post here. I'm not seeing the duplicate channel stacking on my devices, all Apple. We recently started receiving ATSC 3.0 broadcasts and the guide data shows those, as well as the ATSC 1.0 channels separately. I realize I can "hide" these channels by either disabling them in the tuner, or by using Channel Collections, but that won't solve the issue. Right now, I can obviously "choose" the channel I want to watch, but since my tuner only has two ATSC 3.0 tuners, if those are in use, stacking should send me over to ATSC 1.0, correct? I'm also stacking by Guide Data, not by channel number.
I also see this same behavior with the TVE locals, but sometimes those work. Since we have a Fox affiliate, that guide data doesn't always match, so I get why that one might not work.