Cannot change depth of 3D cube

edit

In Draw Help states: "To edit the properties of the 3D object, use the Line and Filling toolbar and the 3D Settings toolbar."

1. Select and draw a Cube from the 3D-Objects Bar.
2. Select the Cube.
3. Note that 3D-Settings Bar Remains grayed out.
4. In 3D Effects window
5. Geometry is grayed out, along with Segments
6. Note that Toggle Extrusion is grayed out so cannot determine if it is on or off. Changed to Safe mode and repeated 1-2 and found 3-6 are the same as above.

Libre Office Instalation, Version: 6.4.5.2 Build ID: libreoffice-6.4.5.2-snap1

OS Ubuntu 18.04.4 LTS Updated.

Platform CPU threads: 4; OS: Linux 5.4; UI render: default; VCL: gtk3; Locale: en-GB (en_GB.UTF-8); UI-Language: en-US Calc: threaded