Try to download the latest package for your linux distro from 

https://github.com/wkhtmltopdf/packaging/releases/tag/0.12.6.1-3
I had to install wkhtmltox_0.12.6.1-3.jammy_amd64.deb which had some missing packages like xfonts-75dpi needed to be installed.

Hi,

Mostly the report layout issue can be solved by installing the package wkhtmltopdftry to uninstall and re-install the package. You can follow the below command.

sudo wget https://github.com/wkhtmltopdf/wkhtmltopdf/releases/download/0.12.5/wkhtmltox_0.12.5-1.bionic_amd64.deb

sudo dpkg -i wkhtmltox_0.12.5-1.bionic_amd64.deb
sudo apt install -f


And restart your odoo service.

Please refer to a similar forum below:https://www.odoo.com/sk_SK/forum/pomoc-1/header-and-footer-not-showing-in-pdf-205290

Hope it helps

almost fixed I ended up installing the v16 and the wkhtmltopdf with patch qt, it almost worked but now the bottom lines of the invoice are gone in the A4, I tried almost all the margins possible, disabling the smart fit etc, I always got or the header or the bottom lost . 

The funny thing is that I had this working in the past 

I have the same issue using the online version.  Layout in example is ok but in print preview and print output it is messed up.  I am using the standard template "boxed" for my invoice

Hi 

Check these reference 

Report Layout Problem

Odoo Report layout Issue :- Solve

Regards