Impress: Styles changes after reopening a presentation

I’ve created a template for my presentations. I’ve set the styles to a font of my choice. I saved the template.

When I create a new presentation the Default style has been changed to Time New Roman - not the one I preset it to when creating the template.

This has the also the consequences that when I correct the font in a style and saves the document/presentation then when reopened the font is back to the Time New Roman.

How do I overcome this annoyance?

Forgot to write: Running version 4.1.0.4 on Fedora KDE