@ Golia - You can run FreeCAD in Ubuntu 18.04. Go to /home/.local/share/applications and open your FreeCAD starter with an Editor. Replace the Exec-entry with this one:

Exec=sh -c "LIBGL_DRI3_DISABLE=true freecad" --single-instance %U

@Emmanuel - I don't know how long ago i opened SW3D in the terminal, but there semes to be some changes since then. I can now run SweetHome3D-Java3D-1_5_2 in the terminal and SW3D is starting. WAHOOO it's awesome to get the libraries back!!!