Indeed, and the document portal seems to have built-in support for atomic writes by first writing to a temporary file and then renaming it (https://github.com/f

Indeed, and the document portal seems to have built-in support for atomic writes by first writing to a temporary file and then renaming it (https://github.com/flatpak/xdg-desktop-portal/blob/main/document-portal/document-portal-fuse.c#L2636 https://github.com/flatpak/xdg-desktop-portal/blob/main/docu...), so it should be possible to avoid this scenario altogether.