Why did the keyboard on my Galaxy s5 shrink to 1/3 size? I can't get it back to full size

[AC Question]

As far as I know, I didn't!t do anything to cause this

 

[B. Diddy]

Welcome to Android Central! Go to Settings>Accessibility--​any of those settings turned on?

 

[Arenzwen]

Wondering if you ever figured it out. I just had the same thing happen!