Everybody does it. At least, everybody I know.
Then again, except my grandmother, I may have to accept the fact that, actually, NOBODY I know is neurotypical. It may be that everyone I know is either Aspie, ADHD, schizoid, dealing with senile dementia, or bipolar (or a kid, which is an atypicality in its own right lol).
I do it often. One of my favorite catch phrases is, "If it was a snake it would've bit me." It means that it was right there in front of my face, and I still didn't see it.
I write it down to noticing everything, plus not multitasking well. Just because you see it, doesn't mean your brain has the available bandwidth to process what your eyes are saying.
My mamaw is in the later stages of dementia. She can look right at something-- especially if it's something she's worried about not having, like CocaCola or incontinence pads (she has STACKS of both in her closet)-- and end up crying because she can't find it.
_________________
"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"