I am experiencing this issue as well. I think the Disney app is a red herring, this seems to be a larger Roku Express issue.

For me this is happening for at least Hulu, Sling, and Google Play Movies on my Roku Express. I can generally go about 20-30 minutes before it takes me to the home page. Not that huge of a deal when watching a sitcom, but it's really a pain when watching an hour long show or a movie (especially on Hulu where resuming a show or movie tends to take you back before the previous commercial break)

I also have a Roku 2 that does not have this issue (and has never had it).

I am now having the same issue with my Roku Express. It is happening with Hulu TV, Hulu and Amazon Prime. It seems it is happening after 30 minutes of non activity. If I touch my remote during this time I restart a new 30 minute imaginary clock. Please help. This is annoying and I love Roku. We even have the TCL downstairs.

Edit: Could it be on the way we exit the programs? Adding a screen saver or new background? Should I do a factory reset and not add any screen savers or backgrounds?
Let me know what to do to troubleshoot this issue. I will be happy to do whatever it takes to resolve this, apparently, long, ongoing issue.

Thanks for letting us know what you are seeing. 

We'd recommend trying to restart your device and your wireless router to see if this helps clear up the issue. You might also try removing one of the affected channels, restart your device, then try adding the channel back once more. 

Also, make sure to visit Settings>System>System update>Check now and check for any system updates. 

If the issue continues to occur from there, please send me a private message with your Roku account email address and the serial number fo your Roku device from Settings>System>About. I'll follow up with you directly to continue assisting you from there. 


Cheers,
Tanner

I have 3 roku1's as of Aug 3rd 2019 they
all like clockwork in 20 to 30 minutes back up to the main page. Always worked fine till then. On Netflix, Hulu, Amazon, basically everything in the channel store I use, now does this. I have done factory resets on all of them, tried all the other stuff first, set my router back to original state. The cable company came out checked all my stuff, router, checked wires, speed etc. I thought maybe it was because my rokus are older, but obviously if it's doing it on the Express theres more to the problem. After the cable company came out I figured it was fixed. Nope not at all nothing works. Roku needs to get this figured out

Jah56 wrote:

I have 3 roku1's as of Aug 3rd they
all like clockwork in 20 to 30 minutes back up to the main page. On Netflix,  Hulu, Amazon, basically everything in the channel store I use. I have done factory  resets on all of them,  tried all the other stuff first. .  The cable company came out checked all my stuff,  router, checked wires, speed etc.  I thought maybe it was because my rokus are older,  but obviously if it's doing it on the Express theres more to the problem. After the cable company came out I figured it was fixed. Nope not at all. Roku needs to get this figured out

If this is happening during active streaming then it is a bug somewhere BUT if it is happening when the Roku is idle then it is expected and designed behavior.
FWIW: I pretty much watch TV and movies on my Rokus whenever I am awake. I have, with age, become somewhat mobility challenged and  there is little else to fill the time. My Rokus do return to home screen if I am at any menu in any app but it does not seem to happen if there is a stream active, even if it is paused. The longest I leave my Rokus paused is about 45 minutes to an hour so I cannot attest to the behavior with longer pauses.
I have Roku Ultras so the behavior "might" be different for Roku 1s.

Yes its while watching a show. It just all of a sudden goes back to the main page within almost exactly 30 minutes.

I've had the same issue for about 2 months on all channels. I tried all the fixes suggested to no avail. Has this been addressed by Roku? Or are we just supposed to suck it up?

I am experiencing this same problem with several apps through a Roku Express+.  After watching something for about 20 minutes it stops and returns to the Roku home screen.  
I have tried all the suggested remedies but the only thing that worked (temporarily) was doing a factory reset of the Roku device and starting fresh once all my apps were reinstalled.  That worked for a few days but then Roku froze up and appeared to crash and then the problem returned.

Very frustrating.  

Hey Roku, What's the solution?

I was finally able to fix it by doing a Factory reset through Advanced Options.

This is the third time I have reported this exact problem and I still have not heard anything from anyone at Roku.  Just as others have said, after 30 minutes of watching a video on any app, it exits to home screen.  I've tried everything suggested on here.  
On Amazon Prime, if I stop the video and return to the menu, then resume play, I can get through an hour long episode without it kicking me out to home screen.  It seems to be that the Roku thinks that it is inactive if a video is just playing for 30 minutes and nothing else is done during that time by the user.  The Roku needs to be taught that it's ok to continue playing for more than 30 minutes.  That playing a video is not equal to inactive use.
I'm seriously looking into switching to a different brand of device if this problem isn't fixed soon.  It really seems like Roku doesn't care even though many people have reported the same problem.

Jah56 wrote:

I have 3 roku1's as of Aug 3rd 2019 they
all like clockwork in 20 to 30 minutes back up to the main page. Always worked fine till then. On Netflix, Hulu, Amazon, basically everything in the channel store I use, now does this. I have done factory resets on all of them, tried all the other stuff first, set my router back to original state. The cable company came out checked all my stuff, router, checked wires, speed etc. I thought maybe it was because my rokus are older, but obviously if it's doing it on the Express theres more to the problem. After the cable company came out I figured it was fixed. Nope not at all nothing works. Roku needs to get this figured out

Out of curiosity.... Does it happen when you watch something on the Roku Channel?