Usability Regression in GTK4 File Chooser

The current state of the GTK4 file chooser has introduced usability challenges that were not present in previous versions. In GTK3, users were able to efficiently navigate through directories and files using only the keyboard. For example, after pressing Ctrl+O to open the file dialog, one could start typing to filter files and use the arrow keys to select a file.

In GTK4, however, the arrow key navigation no longer works after typing a search string, making it difficult to interact with the file list. If at least focusing the file list to navigate with the arrow keys was as simple as pressing Tab or Shift+Tab, the issue would be less significant.

This presents a significant regression for users who rely on keyboard shortcuts and smooth navigation, impacting productivity and user experience.