Been using Juno for a week; love the experience of NOT even attempting any customization - except for 3 keyboard shortcuts I had to :) one thing that I am finding difficult is in file-chooser dialog (eg: extract archive; save as from browser etc), I have to use the mouse to get the focus to path/location bar. 90% of the time, I need to change from previous folder I was in, the way I work. In Files application, CTRL-L works perfectly; but I am unable to find a shortcut for this in these instances. I have checked documentation and list of keyboard shortcuts for Files
At the moment, only the pathbar of the filechooser is supplied by Files, the rest (including keypress handling) is the standard Gtk filechooser so I am not sure this can be fixed. However, the intention is to use the NativeFileChooser interface to have the whole filechooser supplied by Files in which the shortcut will work.
I have raised an issue on the Files issue reporting page about it.