If RMP v5.0 reappears without the problem of the screensavers interrupting slideshows (they don't interrupt video streams), maybe you could check yours again without the workaround. FWIW.
I suspect if it reappears without the problem then they implemented the workaround. :-D
Screensaver should not activate when video player is playing full screen. Audio player should remain playing when screensaver is activated.
I'm not actually the Roku developer, I'm the app developer that sends the contect. So I can send the right info the Roku developer, what is this screensave stuff and how does it get controlled? it would need to show whatever images my app sends.