I recently picked up an iPad Pro 12.9" and I've notice that if you don't put your finger in just the correct place the movie and tv lists won't scroll, the whole page just bounces. If you wait a bit it will then accept your input and let you scroll a bit but then locks up again.
I'm not sure if it's exact finger placement that is the issue or if something is still happening behind the scene and it's not accepting scrolling input. It's certainly wonky and a bit unpredictable.
Scrolling works fine and rather flawless on my 9.7" and my iPhone so not sure what it is about the 12.9" that causes the issue.