Unfortunately they also lost tons of functionality in the process. The fact that typing on a file picker starts a recursive search instead of simply jumping to the file/folder with the prefix you typed, is nothing short of hilarious.
...and the filename is shown as a focused highlight, leading you to think that's where the focus actually is! But no, it's in the search field, at the bottom right of the dialog.
I could not believe that misfeature was actual, intended behavior from upstream gtk and not some stupid MBA-minded decision made by district maintainers when I ran into that on elementaryOS 6.
Gtk-classic is the only thing that keeps me sane https://github.com/lah7/gtk3-classic