Yup, precisely this. I'm inclined to think it may be more sleep deprivation driven than anything else, as I find myself doing it intermittently - and the odd th

Yup, precisely this. I'm inclined to think it may be more sleep deprivation driven than anything else, as I find myself doing it intermittently - and the odd thing is I'll proof what I've written thrice and I'll still mis-read incorrect words as what I had intended rather than what I wrote. Definitely didn't do this in the past, I find it disquieting, but it's hardly insurmountable!