Same issue with my Roku Ulta and 20 year old sony wega. Hit rewind, turns tv off and after turning it back on, its always on vudu channel. Sometimes remote still works sometimes it has to be learned. So its more than 2 people out of 50 mil or whatever statistic was spouted off in another comment. People just dont want to take the time to post a question only to get referred to the maker of product or the company that owns the app, so on. Most threads end with something like this "sorry, its not us, its got to be your tvs, I bet you two have the same exact make/model tv, it cant be roku" or "sorry its not us, thats not our app, you need to contact the company that owns it" or "sorry its not roku, it has to be the way you are pushing the button on your remote, go to you tube and watch some videos on how to use a remote". Normal blame shifting, nobody wants to step up and say "okay, it may not be our fault but Im going to do what I can to help you solve your issue" (referring to paid cust serv reps, not you). That's if you actually get to interact with a human, someone that understands words grouped together.
So as I said its also happening to me, today, yesterday, the day before, a few weeks ago and periodically over the last year. No, its not because they have the same make/model tv (come on, really?), however unlikely that would have been. It's roku changing stuff again and now shortening the life of my tv bulb. I'm glad our nukes arent on a google, roku, amazon, uber, tesla launch system. If so we would have already accidentally nuked someone by now. Then when the govt. calls to ask what happened "why did a missile just launch and wipe out China", they'd say "sorry wasn't our fault, you need to call the scientist who made the nuke or you can post your question to our forum."