Similar question to yours as outside of youtube I don't fiddle with Googleplay. itunes, stitcher or any of the tabbed social media to the right. I would listen more often but all of the other shtuff makes makes it too confusing.
I use my iPhone almost exclusively for posting and listening. If I start a youtube video with the app I am stuck. I can’t do anything else without the video stopping. I haven’t tried it in a safari browser window is but even then seeing Stephanie pulling the sweatshirt over her hands freaked me out. I may not sleep tonight.
p.s. i just tried it in a safari window and it cuts out as well if I try and switch windows.