This looks very much like https://forum.snapcraft.io/t/firefox-unable-to-edit-filename-to-save-as/31081. Can you please file an issue upstream (https://github.com/lxqt/xdg-desktop-portal-lxqt/issues), and share the link to it here?
This looks very much like https:/ /forum. snapcraft. io/t/firefox- unable- to-edit- filename- to-save- as/31081. Can you please file an issue upstream (https:/ /github. com/lxqt/ xdg-desktop- portal- lxqt/issues), and share the link to it here?