Have you been interviewing recently? The qualitative interviews that test design are actually the ones that are unreasonably challenging now. You have to cater to the interviewers design philosophy.

For example I tend not to prefer putting data into a class if it's not needed, but we had one interviewer who wanted all my logic as methods on a class even though it's fine to have functions operating on a data structure. Not a big deal either way right? But there it is... With the influx of candidates they measure this bs.