Pdf-output changed fonds

I am using cake 4.4.10 and “dompdf/dompdf”: “^1.0.2”,
Sometimes the output is switching to strange looking fonts.
Could you give me an idea, where do <I have to look for the reason?
It is the develop-environment Laragon.
Kind regards Klaus

Only sometimes? No pattern you’ve discovered about when it works properly and when it doesn’t?