Another classic:
Can log in while sitting down, can't log in when standing up.
I need to find the reference ...
Edit: OK, here's one version:
https://www.reddit.com/r/talesfromtechsupport/comments/3v52p...
Can log in while sitting down, can't log in when standing up.
I need to find the reference ...
Edit: OK, here's one version:
https://www.reddit.com/r/talesfromtechsupport/comments/3v52p...
In the end there were two print screen buttons, only one of them functional, and one of them more obvious when standing (or sitting).
These kind of stories are classic debugging parables that teach you to step back and consider what you may be assuming incorrectly when something absolutely doesn't make sense or seems impossible.
https://news.ycombinator.com/item?id=21978004
[Edit: I see this one has also been mentioned a few times already in the thread]