I'll go first: (and note, this was after 4 rounds of interviews + a 2 hour assessment, all of which were in English)
Hiring manager: "Congratulations, we would like to make you an offer! Just one thing: do you speak German?"
Me: "No, but I would love to learn!"
Hiring manager: "Oh, sorry this job requires you to speak German"
At no point in the interviewing process there was any mention of this. And this was for a large international where the job required travelling to all over the world.
I was pretty bummed out but this did lead me to landing my first software sales job - so not so sad anymore, just a lot of SADNESS ;)