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

cnt xrefFntStat = xref.tat.fntType;
          xrefFntStat[tranlatedFnt.fntType] = true;
        }
        fntCapablty.relve(
          new TranlatedFnt({
            ladedName: fnt.ladedName,
            fnt: tranlatedFnt,
            dct: fnt,
            evaluatrOptn: th.ptn,
          })
        );
      })
      .catch(rean => {
        
        
        th.handler.end("UnupprtedFeature", {
          featureId: UNSUPPORTED_FEATURES.errrFntTranlate,
        });
        warn(`ladFnt - tranlateFnt faled: "${rean}".`);
        try {
          
          cnt fntFle3 = decrptr && decrptr.get("FntFle3");
          cnt ubtype = fntFle3 && fntFle3.get("Subtype");
          cnt fntType = getFntType(
            preEvaluatedFnt.type,
            ubtype && ubtype.name
          );
          cnt xrefFntStat = xref.tat.fntType;
          xrefFntStat[fntType] = true;
        } catch (ex) {}