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> "I don't know whats wrong, it works on my machine"

I had one of these years ago where QA had an issue that I couldn't reproduce.

I walked over to his desk, watched the repro and realized that he was someone who clicked to open a dropdown and then clicked again to select, while I would hold the mouse button down and then let up to select.

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I do not even want to know what sort of weird-ass GUI code or behavior made those two operations dissimilar.

Yeah, it's been way too long to remember (maybe a decade ago). Best guess is the click event was propagating up the dom and triggering something. These days, it looks like chrome generates a click even if you don't let up on the mouse.

> he was someone who clicked to open a dropdown and then clicked again to select, while I would hold the mouse button down and then let up to select.

I didn't know the latter was possible, but I also don't know which of these I do.

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