Reported via slack:

charlie 9:56 PM
going for a good head scratcher.. If I I have IE11 just breaks with a "Error: Invalid argument." error (changing the type to text brings it back to life). Fine in 8. While the type isn't supported, I'd expect IE to just gracefully degrade back to a text input.

Had a quick look into it and IE 11 throws when you try to use the setter directly with a value it doesn't support.

// Throws
input.type = "date";

// Works
input.setAttribute("type", "date");