The controls on my Roku stick, at least when used with Amazon Prime are awful.
Hit the circular go back button (again - how do you talk about icons when they don't have an obvious name?) and the show backs up 10 seconds. Sounds very useful. Hit again quickly and the show goes back to the start. If I want to back up 30 seconds, I generally end up at the start, with no easy way to get back to where I was. Grr.
There is no stop button. There is a pause button. But if you pause, go back to antenna TV, then return a few hours later, you are likely to find that you have played several episodes of the show and lost your position in what you were watching and lost your position in the episode tracking.
The left arrow button (the straight go back button?) often takes you back to where you came from. But if you are watching a show, you have to hit it three times to make the show truly stop.
But what really annoys me applies to all of the the entertainment services that I have used, Hulu, Amazon, Netflix, I Heart Radio - PLEASE STOP with the idiotic recommendations for what I will like. You don't have a clue.
You have no idea why I like the shows that I watch. When I watch an entire series it probably means that I like a watching a certain character or maybe I like the plots or the writing. It doesn't mean that I will like anything else of that genre.
When I accidentally start a show because your control lag is so bad, then stop it almost immediately, that does NOT mean that I like the show.
When I start watching one episode of a show and stop halfway through, that does NOT mean that I like the show.
When I watch one episode of a show and then never watch another episode, that does NOT mean that I like the show.
I Heart Radio - when I delete a music theme from your recommended themes, that means I don't want to hear it. It does NOT mean that you should keep recommending it.
When you recommend a number of shows and I don't watch them, that's a clue. You are NOT getting it right. Give up and STOP ANNOYING ME.