Autocorrect will do that as well thought and in all probability, autocorrect is not Satoshi Nakamoto either.
A quick demonstration:- block chain - I just typed that as one word but my computer corrected me.
Interesting find though!
What desktop browser auto corrects? I've only been aware of tablets/phones doing that
I think all auto-correct in the OS's idiom.
I've seen it in mozila and opera and in tor bundle