Over a year ago, I update Linux Mint (MATE) 20.3 to 21.0 and the calculator app changed to something I really just didn't like, the buttons were moved for "reasons". Changes for the sake of change. I liked using the calculator in 20.3.
recently I learned that the MATE team made a calculator app (why is this not the default install?)
Anyway, it's much better, the buttons (while not the same) are better, and I probably wouldn't have complained if I knew