Crash upon opening command block in pirate speak

I was trying to open a give command block in pirate speak and my game crashed. every time.

What I expected to happen was...:
I see the text of the command block in pirate speak font.

What actually happened was...:
MC crashed.

Steps to Reproduce:
1. Program a command block in us English (for me, I told it to give the nearest player 64 coal).
2. Switch to pirate speak.
3. Try to open the command block.