Ok so this is weird.
I thought my mac's keyboard had developed a broken key, but after some testing it's only broken when interacting with some other keys.
The left shift key doesn't work with a handful of other keys, see the following output with the shift key depressed:
Also note the lack of an
i in that output. That key works, but when the shift key is depressed it doesn't output anything.
It doesn't appear to be a software issue, as it's exactly the same on both my imac and when hooked up to my macbook.
Ghost in the machine?