While in Ubuntu 16.04 this was the default and it was very convenient (at least for me), in Ubuntu 18.04 it always goes to "~/Documents" forcing to navigate to the chosen folder every time.
The use case is probably common: browsing the web reading pdf documents, one may want to keep some of them organized. The probability of several documents browsed in the same session going to the same folder is much higher than not.
This question "...make nautilus to automatically suggest the folder 'Documents'..." ask for the opposite in previous Ubuntu versions, but the solution requires changing the source code, recompiling evince and stop receiving updates for it. In another old question "Can I stop apps from selecting “Recently Used”...", file selector setup is mentioned but the options are outdated.
Is there a setting to control "Save as" behavior in evince or all programs?