pdfcell.setRowspan() method may cause line loss bugs when the word count is high

[lixiang453]

Describe the bug
pdfcell.setRowspan() method may cause line loss bugs when the word count is high

To Reproduce
PdfPCell.setColspan(2);
PdfPCell.setRawspan(2);

Expected behavior
the PdfPCell can still merge rows normally with a large number of words without losing merged rows

Screenshots
Both are the same code
error：


right：

System (please complete the following information):
use openpdf version:1.3.29

Additional context

[andreasrosdal]

Thank you for reporting. Pull requests welcome.

[asturio]

I suspect the problem here is that the content is too big. The text can probably be found in the PDF, but is not being displayed.