I’ve got the same thing with the scrolling, rather annoying. There’s plenty of folk moaning about it on the various forums. It’s an inconvenience rather than anything else, sure they’ll fix it.
The keyboard also doesn’t revert to the alphabet after I type a comma, but does after other punctuation. I like the GIF menu in messages, the new sounds are a bit shit, the ability to doodle stuff is quite amusing. It’s among the bigger changes on an iOS, and the first time I’ve ever had actual issues. They’re not solved in the newest version either (scrolls left to read post)