I found issue with generation PDF with Japanese/Chinese symbols.
Generated table. In last row inserted short Japanese text, but in resulting PDF (see bad.pdf attachment) it is absent (look like replaced with spaces).
If I try slightly change previous text segments - CJK text appeared (see good.pdf)
I attach .cs project which reproduce problem - it generate 2 pdfs: good and bad. The only difference is one ommited empty Segment.
P.S. Used Aspose.Pdf 9.5.0