diff --git a/Nef_3/test/Nef_3/issue8644bis.cpp b/Nef_3/test/Nef_3/issue8644bis.cpp
new file mode 100644
index 00000000000..f419094bfc6
--- /dev/null
+++ b/Nef_3/test/Nef_3/issue8644bis.cpp
@@ -0,0 +1,18 @@
+#include <CGAL/Extended_cartesian.h>
+#include <CGAL/Gmpq.h>
+#include <CGAL/Nef_polyhedron_3.h>
+
+using Kernel = CGAL::Extended_cartesian<CGAL::Gmpq>;
+using Nef = CGAL::Nef_polyhedron_3<Kernel>;
+
+int main(int argc, char ** argv)
+{
+  Nef hspace_1(Nef::Plane_3(1.0, 0.0, 0.0, 0.0), Nef::INCLUDED);
+  Nef hspace_2(Nef::Plane_3(1.0, 0.0, 0.0, 1.0), Nef::INCLUDED);
+  Nef hspace_3(Nef::Plane_3(0.0, 0.0, 1.0, 1.0), Nef::INCLUDED);
+
+  Nef intersection_1 = hspace_1*hspace_2; // Line 14. Works fine.
+  Nef intersection_2 = hspace_2*hspace_3; // Line 15. Assertion failure.
+  
+  return 0;
+}