Hi, few question that I could not find an answer for via Google or
Stack Overflow, nor via the provided Gnome documentation. But I guess
you developers would know:
How can I configure the file chooser?
 * Always open in a mode where I can paste a file name into a text
  field, or can start typing a path (with tab-completion)
  Currently (e.g., with GIMP 2.10.0) it always opens in Recently
  Used mode, so I have to switch to one of the other "Places" and
  then hit Ctrl-L. I don't even want to hit Ctrl-L.
 * When entering a path (Firefox), sometimes I see completion happen
  only when I hit Tab, and sometimes it just happens automatically
  (which is extremely annoying). This behaviour seems to change
  "automatically". At least I don't know how to fix this to
  complete only when I hit Tab.
 * When I change the File Chooser's window size, or toggle visibility
  of hidden files, please don't remember these settings. I want
  them temporary.
 * I cannot remove some entries from the "Places" list. How can I
  change this? Even better: Is there a way to show a nice file
  system tree instead of this "places" thing?