Been using Streaming Stick 4K for almost a year, very pleased with it. But recently captions (using Amazon app for Roku) have become unreliable and intermittent, specifically on The Perfect Miss ("perfekt verpasst" in original German). Each episode starts with captions working correctly, but some minutes in they disappear. Sometimes they reappear on their own, sometimes if I turn them off and then back on. It's a good thing I can mirror my phone to the Roku and watch that way, but it's more cumbersome. On the phone (Android Prime app) captions are rock-solid. And other services (Netflix, Kanopy, PBS) don't seem affected.
As a test I viewed one episode of another series (this one Spanish); captions worked fine. So, please...
1. Anyone else seeing this behavior?
2. This feels like an Amazon problem, and not Roku's. Do you agree?
I've done the time-consuming Amazon support dance with no luck and will post also to their forum.
Thanks for any advice.