I get irritation on "it's". It's highly annoying. Also, I now have to stop and think about it when I write it, when it always used to be automatically right.
(I'm slightly relieved that you're getting it too, which suggests it's natural passage of time rather than mummy-brain-death that does it.)
(I'm slightly relieved that you're getting it too, which suggests it's natural passage of time rather than mummy-brain-death that does it.)