On stackoverflow, it is not so clear-cut and I can't tell you one single kind of question. But on physics.stackexchange.com, my problem is that apparantly medium-level questions are frowned upon. We have some very high-level (research-level) questions, and many very low-level (popular science or below high-school level) questions. People rightfully complained about the low ratio of high to low level questions, but one thing they did against it was to ban "homework" and "homework-like" questions. This does not just include actual homework, but basically anything where you say "I'd like to calculate x, how do I do it?", and anything where you have to go through a few steps to find an answer.
The problem is, after ~10 years at the university, studying and teaching, I'm basically an expert in "homework". I can answer most university-level questions. I prefer answering (and asking) questions where the answer is "do this, then this, and then you get that", maybe with a few formulas, to a few paragraphs of prose. After all, I personally think that fits better with the SE model and with physics. But actually, what's welcome at the moment are mostly "conceptional" questions where an answer explains an abstract concept with prose. The community has narrowed down the allowed scope a lot out of fear of 1) low-level questions, and 2) accidentally helping somebody with their homework (god forbid!). But instead of getting more expert-level questions, they get less mid-level questions. I've found that I can currently neither ask nor answer anything there.
The problem is, after ~10 years at the university, studying and teaching, I'm basically an expert in "homework". I can answer most university-level questions. I prefer answering (and asking) questions where the answer is "do this, then this, and then you get that", maybe with a few formulas, to a few paragraphs of prose. After all, I personally think that fits better with the SE model and with physics. But actually, what's welcome at the moment are mostly "conceptional" questions where an answer explains an abstract concept with prose. The community has narrowed down the allowed scope a lot out of fear of 1) low-level questions, and 2) accidentally helping somebody with their homework (god forbid!). But instead of getting more expert-level questions, they get less mid-level questions. I've found that I can currently neither ask nor answer anything there.