I know some companies do this, but most don't. Job applicants going for competency based interviews should be given the questions they will be asked at the interview in advance. AIBU?
The whole point of competency questions in job interviews is to choose the best candidate based on previous actions; to make the best decision, you need the best evidence; to get the best evidence, candidates should be given the questions that will be asked beforehand so they can focus on coming up with examples in those areas and not waste time with hypothetical questions.
Everyone wins: The companies hiring get better examples to base their decisions on and candidates don't waste time second guessing what questions they will be asked. Not giving the candidates the questions beforehand actually defeats the whole point of comp questions as it prevents the company from gaining the best information possible.
It seems to be a remnant from a time when conversational led interviews were the norm and questions often came out of the conversation so often weren't known in advance, but it doesn't make sense in com based interviews when specific historical examples to a question are demanded.