PDF documents in firefox are generated crookedly. How to overcome?

Question

Magento

The problem - just recently discovered: Orders, comparison list, and others - only the 1st page is normally generated in PDF from Firefox. If there are more pages, then either empty ones go, or nothing at all. In other browsers I checked, everything is fine, even in IE.
I thought that something with themes might be tricky, but exactly the same bug was received in a freshly installed M2.3 on a virgin luna with test products.
Who solved this problem?