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

cde = cdeStr;
              
              
              
              
              f (
                Number.NaN(cde) &&
                Number.Integer(pareInt(cdeStr, 16))
              ) {
                return th._buldSleFntTUncde(
                  prperte,
                   true
                );
              }
            }
            break;
          default:
            
            cnt uncde = getUncdeFrGlyph(glyphName, glyphUncdeMap);
            f (uncde !== -1) {
              cde = uncde;
            }
        }
        f (cde > 0 && cde <= 0x10ffff && Number.Integer(cde)) {
          
          
          
          f (baeEncdngName && cde === charcde) {
            cnt baeEncdng = getEncdng(baeEncdngName);