I've tried both with stock remote and a universal. If I am quick enough, I can catch the content that I am trying to get to. This happens both horizontally and vertically. Often times the roku is unresponsive to the back button as well. After a long wait I can hit back. I looked on here for other posts about this, and they mostly seem like just using the stock remote did the trick. But not in my case.
Edit: Seems to be behaving even worse today. To get to the content that I want to watch, I normally have to quickly catch it while scrolling down and just watch whatever the first item of the row I want for a bit before the back button responds to let me return to the previous menu so I can play the horizonatal scrolling game to catch what I actually want to watch. But it's been a couple hours viewing the content that I do not want and the back button is still not cooperative. I can hit menu, but then I just start the process all over.
If you are unable to resolve the issue you are experiencing, please send me a PM (private message) with your Roku account email address, and include the serial number of the Roku device from Settings>System>About along with a summary of the issue you are experiencing. I'll be able to assist you further from there.
Please send me a PM (private message) with your Roku account email address, and include the serial number/device ID on the Roku device along with a summary of the issue you are experiencing. I'll be able to assist you further from there.