Set up and keybinds

I would like to know if there’s a way to save dialog size view, at default the window is too small and the folder boxes are collapsed. I enlarge it and click on save preferences, but it doesn’t save it. Some dialogs (like exporting/importing) doesn’t have the save preference button.

Also when searching for keybinds, the search acts as having wildcards lilke yoursearch. Is it possible to make exact searches?