Touchscreen doesn't react whilst editing text when using SwiftKey

After starting MCPE i wanted to create a new world. By tapping on the text field saying "My World" I should've been able to change my name using the SwiftKey keyboard.

But when I tried to edit the text to change the world name the touchscreen didn't react anymore and I was only able to leave the text field by using the Back-Key of my Smartphone. That happened at every text field I tried.

I'm using a Galaxy S4 (GT-I9505). This error only occured whilst using the SwiftKey keyboard. In older versions of MCPE the keyboard worked fine.