In print format there is a mixed font in sales invoice

Frappe Framework Print Formats
1

In ERPNext there is a mix font in print format in sales invoice. so I want to know whether it is a frappe mistake or the ERPNext developer fault?
Screenshot 2024-07-12 140119

2

I think, it’s address so please check it in the address doctype and check the font. It’s not a fault.

3

I have checked the address and its in a letter head of our company but this particular one is not showing anywhere. so is there any other way to locate and fix this issue ?

4

Please check the letterhead, whether any style applies or not. and if custom print format then also check that style or print style.