A deliberate change by the developers.
From the 'News' https://gitlab.gnome.org/GNOME/gimp/blob...6/NEWS#L11
- Merge the file view filter and file format lists in GimpFileDialog.
The presence of 2 lists was very confusing.
I have used Gimp for many years, always just added the extension (if required) when exporting and Gimp brings up the correct dialogue.
From the 'News' https://gitlab.gnome.org/GNOME/gimp/blob...6/NEWS#L11
- Merge the file view filter and file format lists in GimpFileDialog.
The presence of 2 lists was very confusing.
I have used Gimp for many years, always just added the extension (if required) when exporting and Gimp brings up the correct dialogue.