Line spacing issue in tables with PDF files

Line spacing is too small in tables when output pdf files.
The figure below shows both Chinese and English text in a pdf file:



In my opinion, this issue is obvious, and yet I can't find much information about it on the Internet.
It seems a bug in Prawn? Any idea how I can increase the line spacing in a table?

Found this one: https://github.com/asciidoctor/asciidoctor-pdf/pull/838

After some more tests, now it seems to be something related to package asciidoctor-pdf-cjk or asciidoctor-pdf-cjk-kai_gen_gothic package. I am not sure. I wish I could write Ruby.