So it can actually make logical sense to do it occasionally even from a purely selfish perspective if it's half an hour on a random Tuesday evening and you aren't actually doing anything else important.
All depends if the company is actually going to be grateful or not though
Not sure if upper management sees this stuff. For the number of times I've fixed other people's crap (or found the root cause, so they can just fix it) I don't think I got any recognition for that.