Fonts in Scribus 1.4.8 are shown as embedded, but text is exported as images

[Jasen57]

I use calibri font family (cyrillic). While exporting a book as PDF for any version (1.5, 1.4 I tried) calibri is successfully added to the window of embedded fonts, but the resulting PDF is uneditable. Subset checkbox in Fonts settings is unchecked.

[Jasen]

Solved by installing version 1.5.8. and exporting the file from it. Old version (Stable) seems unable to do that.