Hello,
Thank you very much for the question and I am very sorry about the issue!
This is a limitation with Archicad text handling. Archicad supports symbols from Unicode plane called Basic Multilingual Plane (BMP), like many other Unicode programs. Emoji characters are not included in this, so we don’t recommend using them.
In certain situations, emojis and symbols are visible, but there is no guarantee that the Archicad will be able to handle these characters correctly elsewhere. Moreover, it can also cause operational anomalies to the string conversion.
I hope this answers your question. Feel free to ask if you have any further issues!
Best regards,
Minh
Minh Nguyen
Technical Support Engineer
GRAPHISOFT