When selecting a file to attach to an e-mail in the browser (I use Gmail's web interface), I want to be able to quickly navigate in the "Open File"-like menus by first entering the full directory path, then clicking on the file. Instead, I see a window that implies that I have to click through the directory structure.
I remember that the desired behavior was possible some time ago, but then the filepath field just disappeared from these windows.
If it matters, I use Xubuntu 17.10, the problem persists in both Firefox and Chromium.
There is a related question, but it has no answer as the issue of the OP just mysteriously solved itself.