I have times when little details seem to allude me, more so when I'm having an "off" day.I personally love to daydream, it helps with over stimulation that I experience with using public transit and living in a big city. Is not noticing small things a direct symptom? Maybe, but daydreaming itself is considered a symptom of ADHD.

In terms of work, I have to ask for direct and detailed jobs so that I don't find myself asking 50 questions afterwards (even though it doesn't always help). If you let your employer know that you have ADHD it helps make them understand. Anyways, it's a normal thing, so don't let it bother you