Just one example, but I was failed on a technical I took recently. It had a runtime, so not a whiteboard. But the editor I had to use provided no checking and I only found out after minutes of work that debugger breakpoints were not supported (the interviewer had not used them before)

So I failed the technical as I had to spend like a substantial amount of a 45m session console logging out values and experimenting as I went. It turned out I missed a few characters in my code. I was pretty beside myself.