I hate it so much when I want to do some obscure thing on Windows, but when I go to the place you used to be able to do it, it's gone! Replaced with a "modern"

I hate it so much when I want to do some obscure thing on Windows, but when I go to the place you used to be able to do it, it's gone! Replaced with a "modern" control panel which doesn't support that obscure thing. Instead, I have to find my way to the old window via a different route. Eventually the original control panel pops up and I can change that setting. I don't have a problem with changing things if it replaces all the functionality.