Only ran into this problem when I was trying to format some output from a script I was creating—when you type two dashes in a row, I believe iOS 11 now modifies that to be an em dash. However, it doesn't seem like Pythonista knows how to handle it. It deletes a previous character in order to accommodate it, and even though visually it looks like one dash due to the monospaced font, you have to press the arrow key twice to move past it.
Anyone else experience this?