Why does Firefox only print the first page with bootstrap 4?

Question

css

Here is an example of a page:
www.dogfoodcalc.com/en-en/test-page
I press print - I get only the first page:
https://i.imgur.com/uCJQaXk.png
There is also a bug in chrome, but it is simpler.
I even created a ticket:
https://bugs.chromium.org/p/chromium/issues/detail...