/usr/lib/libgnustep-gui.so.0.25 is in libgnustep-gui0.25 0.25.0-4+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libgnustep-gui.so.0.25.0
/usr/lib/libgnustep-gui.so.0.25.0