tex export overshoots right margin with mixed fonts

[Rob Sargent]

    Looks to me like this only happens if the
      last word of the line is "emphasized" and larger font.  
    
        I'm using emacs 28, org 9.5.5
        
      #+OPTIONS: author:nil

#+OPTIONS: toc:nil

#+OPTIONS: date:nil

#+OPTIONS: ^:nil

#+LaTeX_HEADER: \usepackage[T1]{fontenc}

#+LaTeX_HEADER: \usepackage{libertine}

#+LATEX_HEADER: \usepackage[margin=0.70in]{geometry}

#+LATEX_HEADER: \usepackage{setspace}

#+LATEX_HEADER: \usepackage{enumitem}

#+LaTeX_HEADER: \usepackage{endnotes}

#+ATTR_LATEX: :options [noitemsep, nolistsep]

#+ATTR_LATEX: :options frame=single,backgroundcolor=\color{lightgray}

* Database Retooling

** Mapping instructions

A feature (or is it a bug) of the current processing is the "look ahead" feature which

scans the _=MappingInstruction=_ table for instructions "related" to the one in hand.  Any

found are processed along with the instruction in hand.  It was found that looking ahead

when there /too many/ instruction became too expensive. To guard against that, "extra"

records are moved to _=MappingQueue=_ table (and back again) to keep _=MappingInstruction=_

under approximately 5000 records.  This to-and-fro happens on a five minute interval,

external to the =Resolve= application.