I found all my streaming videos in youtube are affected. it just kicked off to the main menu after few minutes of usage.. not usable to me. I have 2 Roku, one I didn't upgrade, which was working well but it has the same issue afterwards. really painful...
I also have fire tvs and which works perfectly without any issue. so I agree which is Roku related with YouTube.
What model Roku are you using? If it's an older model, the YouTube channel just flat doesn't work well. Google keeps updating the channel for the latest models and doesn't seem to care if they break it on older boxes. For example, it's unusable on the 2 XS (model 3100). On my Stick it's fine. On my Insignia TV, it's usable but a little sluggish. It's also fine on my Sharp TV, my Ultra and my Premiere, so the newer, more powerful devices seem to work fine.
Just because it works fine on a Fire TV means nothing on a Roku. Two completely different operating systems, so the apps are completely different. It's all on Google to fix their Roku channel.