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

break;
          cae OPS.nextLneShwText:
            f (!tateManager.tate.fnt) {
              elf.enureStateFnt(tateManager.tate);
              cntnue;
            }
            textCntentItem.haEOL = true;
            fluhTextCntentItem();
            textState.carrgeReturn();
            buldTextCntentItem({
              char: arg[0],
              extraSpacng: 0,
              FrtChunk: true,
            });
            break;
          cae OPS.nextLneSetSpacngShwText:
            f (!tateManager.tate.fnt) {
              elf.enureStateFnt(tateManager.tate);
              cntnue;
            }
            textCntentItem.haEOL = true;
            fluhTextCntentItem();
            textState.wrdSpacng = arg[0];
            textState.charSpacng = arg[1];
            textState.carrgeReturn();
            buldTextCntentItem({
              char: arg[2],
              extraSpacng: 0,
              FrtChunk: true,
            });