I'm having a similar problem with standard (not live) YouTube videos streamed with a Roku Ultra. At a random time, YouTube jumps from the video I'm watching to the next in the queue.
Is there any resolution yet for this problem? I started to have these symptoms on live feeds via the Youtube app in late March, almost immediately after the latest Roku system update. I received that update on March 25, 2019, at 3:03 PM PDT. I had no problems before that. I do have problems now, including an example just a few minutes ago, on June 16, 2019.
Unit is TCL Roku TV 8116X, TCL Model 32S327,Software version 9.0.0 build 4151-48. I purchased this unit new on January 1, 2019.
Could it be interference between a Roku .....and closeness to a smart tv -or wireless router?
I have a Roku Uktra in the living room, next to a smart TV and a wireless router.
For months to this day, a YT Live stream channel will be playing, then stop after about 10 minutes
I, also, have a Roku 4 in the bedroom connected to the bedroom TV, about 20 feet away from the smart Tv and wireless router
That does not stop playing YT live streams after about 10 minutes Issue. That includes watching the same Live stream channel
The Roku Ultra and Roku 4 are connected to the same wireless router.
Last week, i temporarily moved and hocked up the bedroom Roku 4 next to the smart TV and wireless router----and the Roku 4 started stopping after 10 minutes of watching live streams on You Tube. Returned the Roku 4 back to the bedroom, it was not doing it any longer.
I have not had time to experiment more, to formulate some more concrete conclusions.
EDIT FOLLOW UP: Did more testing on the above theory.....does NOT appear to be a link