oh man I was fighting with a supplier of one of our systems and about this exact thing a couple months ago, I think. copy/pasting something from one part of their software would allow an invisible/zerolength character in a unique identifier field, which obviously fucks shit up. they, as always, were incredibly difficult to deal with instead of just acknowledging the bug and saying they’ll fix it
My favourite is the zero width space. It has interesting interactions with many text fields.
oh man I was fighting with a supplier of one of our systems and about this exact thing a couple months ago, I think. copy/pasting something from one part of their software would allow an invisible/zerolength character in a unique identifier field, which obviously fucks shit up. they, as always, were incredibly difficult to deal with instead of just acknowledging the bug and saying they’ll fix it