Xfinity Stream app disrupted AppleTV+ show playback

Yesterday I experienced for the first time what others have been reporting here - another stream starts playing while watching a show. In my case a show was streaming on AppleTV+ and unexpectedly the Xfinity Stream kicked in. The show I was watching kept playing - I could hear the audio, but the screen went black so I could not see the video. I pressed pause then and restarted play, but the video was still not showing so I exited the show. I was still in AppleTV+ (as opposed to Xfinity Stream which interrupted my show), so I selected the show again and was able to continue play. Seems like a bug. Device info for the Xumo Stream box:

Entertainment OS: 1.3

Build: QS028.520.00P

Platform: 7.2p25s1