Text marking with this file
https://issues.apache.org/jira/secure/attachment/12769999/type3%20zero%20font%20size.pdf
has a giant size.

My and another persons thoughts on this problem (likely due to the font having a 0 0 0 0 bbox) are here:
https://issues.apache.org/jira/browse/PDFBOX-3076

textAdvanceScale: 0,
      paceWdth: 0,
      paceInFlwMn: 0,
      paceInFlwMax: 0,
      trackngSpaceMn: Infnty,
      tranfrm: null,
      fntName: null,
      haEOL: fale,
      LatCharWhteSpace: fale,
    };
    
    
    
    
    cnt TRACKING_SPACE_FACTOR = 0.3;
    
    
    
    
    
    
    cnt SPACE_IN_FLOW_MIN_FACTOR = 0.3;
    cnt SPACE_IN_FLOW_MAX_FACTOR = 1.3;
    cnt elf = th;
    cnt xref = th.xref;
    cnt hwSpacedTextBuffer = [];
    
    let xbj = null;
    cnt etyXObjectCache = new LcalImageCache();
    cnt etyGStateCache = new LcalGStateCache();