Questions about page breaks

[pocari]

I have a question about page breaks when a cell contains a lot of text.

I got the pdf like the attached image with the following script.
https://gist.github.com/pocari/b9cc556530b45e7d9ddddeee2a160f4a

As shown in the attached image, when a cell set with rowspan=2 contains a lot of text, the display seems to be broken.

I have two questions regarding this.

1. in the case of rowspan=2, is it possible to extend the ruled lines of other cells downwards?

2.Is it possible to output the overflow on the next page?

The entire pdf is also attached.
output.pdf

prawn (2.4.0)
prawn-table (0.2.2)