Hello, Lech Kulikowski
I attached sample report with test data for analysis.

I use the last release build 2021.3.6 And add used fonts in the font collection. But display incorrect. Example my code to add use fonts. Stimulsoft.Base.StiFontCollection.AddResourceFont("angsa.ttf", System.IO.File.ReadAllBytes("Fonts/angsa.ttf"), "ttf", "Angsana ...

I did a test report in Thai language. Display no problem But there is a problem when printing pdf and export pdf. How can this problem be solved?