missing characters in expanded pdf

[nblinov]

Hi,

I am trying to expand a presentation with some elementary overlays, but some characters end up missing in the exported pdf version. I suspect this has something to do with the fonts not being embedded. Is there any way to change this? Thanks!

Here's an example:
In the LibreOffice file I type set

In the exported PDF this appears as

The fonts being used here are standard Latin Modern fonts.

[abhijitutkarsh]

I would like to work on this.

[monperrus]

cool! looking forward to the pull-request!