FBReader writes hyphen after each word

[Moltke]

Toshiba Portege R700
Lite 5.0

I use FBReader a great deal and I have the version 0.12.10dfsg2-4bu installed from the repository.
When reading an epub book the application inserts a hyphen after every word before the space.
No amount of fiddling with the settings changes this.
I have a similar setup on a Satellite Pro running MX and FBReader (version 0.12.10dfsg2-3) renders the text perfectly.
My old 32bit D420 runs Lite 3.8 and FBReader works as it should.
I've just learned that the developer no longer supports Linux and that version 12 is old software, I've also read that Ubuntu 20 has dropped qt4 which may explain something.
Has anyone else experienced this?

I've tried quite a few ebook readers and found that Calibre is the best one. You should give it a try

Code:

sudo apt-get install calibre