The new bottom view with pause and dismiss buttons is absolutely terrible. The old way of closing a video by just swiping was much more enjoyable that having to aim for the x and tapping a couple times because you miss or hit the pause button on accident. I used to like it when I could just swipe a video and forget about it.
On iPad the situation is much worse. Its so small but I understand why it exists on iPhone - because the screen is smaller. Either way I am not a fan at all and its incredibly frustrating.
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Major bug report
Its a prerelease version of iOS but on iOS 11 beta 7 the iPad app has been buggy loading videos. It loads a video but stops, then 2 seconds later the video completely restarts but the audio continues. I restarted my iPad and router but it hasnt gone away.
balderoine about YouTube - Watch, Upload and Share Videos, v12.32