PDF export problem (not copy/paste)

When using export as pdf, some latin text (accented text mainly) does not appear correctly.
The problem does not show with quick pdf export or copy/paste (but in fact, the text is rendered as drawing in those cases, so it's not that significant.)

I'll try to see if it's a problem with Itext or with the way I use it.

It seems to be because the font used does not have the said characters, so I need to use the user-selected font in latin pdf output.

Temporary Workaround