iOS Emoji keyboard does not print to PDF?!

[William de Smet]

Hi there,

A simple iOS app in which the user chooses the iOS keyboard to add text and
an Emoji to a standard LC text field.
I use 'export snapshot' to PDF as PNG to print to PDF.
When there is only text in the field all text is printed to the PDF but
when an Emoji is added the Emoji is not printed to the PDF.
Am I missing something?
Do I need to add some code?

iOS 13
LC 9,6,1 Indy


greetings,

William