I have a Odoo 18 local on a MAC M1, with wkhtmltopdf wkhtmltopdf 0.12.6 (with patched qt). 

The problems occure on a new Database when I want to print the demo quotes.

report.url = http://localhost:8069

web.base.url = http://localhost:8069

web.base.url.freeze = True

The same image somtimes has no text at all but formating seams alright, sometimes some headings are visible.

Any suggestions on how to proceed?