Hi, template author here! Thanks for figuring (no pun intended) the problem out. I have applied your fix and it will be in the next release! Btw, check out the main branch, as I applied frozolotl’s emtpy page fix, which gets rid of the need to manually insert chapter-end!
Putting on my moderator hat: could you maybe try to revise your post’s title to be a complete question as per the question guidelines:
Good titles are questions you would ask your friend about Typst.
We hope by adhering to this, we make the information in this forum easy to find in the future. Thanks!