Why is Fontworks not saving?

When we use Fontworks in a text document, save the document, and then reopen it, we find that the Fontworks images have disappeared. Why is this happening? What can we do to correct the problem?

Please report what is your LibreOffice version, Operating system and the file type used to save.

What version of LibreOffice? What file format?

There has been Bug 60910 - FILESAVE loses Fontwork/shape objects (LO 4.0.0), resolved/fixed in LO 4.0.4 / 4.1.0.