Arrow keys in Xcode 6 not working

Question

I have the weirdest issue with Xcode 6 on OS X Yosemite. For some reason I can\'t use the left and right arrow keys anymore to navigate within my source code. Instead, the syste

Answer 1

I was able to make it work again by running

defaults delete com.apple.dt.Xcode

in the terminal and then restarting Xcode.