Emoji not correctly supported on Ubuntu

[gabriel.klein]

Many emoji are not well supported on Ubuntu 24.04
I tried all fonts.
They are working great with the same font in other applications!

I have the following list of keywords

Insertion socioprofessionnelle -
Emploi -
Formation -
Coaching -
Placement -
Reconversion -
Compétences -
Accompagnement -
Intégration -
Solidarité -

How it’s displayed in LightBurn 1.6.00.

Insertion socioprofessionnelle -
Emploi -
Formation -
Coaching -
Placement -
Reconversion -
Compétences -
Accompagnement -
Intégration -
Solidarité -

[BillieRuben]

Emoji are currently not supported by LightBurn.

Neat that you have some of them working though!

Potentially a work around to get the rest would be downloading the SVGs from the tweemoji project and importing them into LightBurn, and perhaps then adding them to an Art Library for easy reference.

[gabriel.klein]

The emoji are so cool in lightburn, I hope you will officially support them soon!

I try to understand what make them different.

(Based on chatgpt)

Non-Working Set: 🧩💼🧑‍🏫🔄🤝🌐
    🧩: U+1F9E9 (Emoji 11.0, 2018)
    💼: U+1F4BC (Unicode 6.0, 2010)
    🧑‍🏫: U+1F9D1 U+200D U+1F3EB (Emoji 12.1, 2019)
    🔄: U+1F504 (Unicode 6.0, 2010)
    🤝: U+1F91D (Unicode 9.0, 2016)
    🌐: U+1F310 (Unicode 6.0, 2010)

Working Set: 📚📈🛠️❤️
    📚: U+1F4DA (Unicode 6.0, 2010)
    📈: U+1F4C8 (Unicode 6.0, 2010)
    🛠️: U+1F6E0 U+FE0F (Unicode 7.0, 2014)
    ❤️: U+2764 U+FE0F (Unicode 1.1, 1993)

Could be related to ZWJ sequences or unicode version.

When I use code point, UTF-8, UTF-16, UTF-32, they look really similar. As an example:
Not working: U+1F310 - F0 9F 8C 90 - D83C DF10 - 0001F310
Working: U+1F4DA - F0 9F 93 9A - D83D DCDA - 0001F4DA