Since last system update when using my calculator the keyboard has key clicks. No other app has changed (have keyboard sounds turned off). Any one else have this issue?
Welcome to Android Central! That's the behavior I see on my Galaxy A32 5G as well. Samsung must've added this "feature" without any way to turn it off. I can't find a way to access any settings for the Calculator app. If you don't like it, then you could always install another calculator app, like Google's.
There are a number of 1 star reviews in the Play Store recently that specifically complain about this, so you're not alone.