IOS8 Keyboard missing on Messaging App

All of a sudden, my keyboard goes missing on my Iphone 6+. I get the blank space, tap with my finger to get the keyboard to come up and no keyboard. This is a recent thing and I'm wondering if it's a glitch from the latest update. It's never been a problem before. I have to shutdown the app and restart it in order to get a keyboard. It's now happening with 3 out of 5 messages.

Any help is appreciated.

Thanks!