i just recognized that my Manjaro Gnome installation does not display Unicode characters like U+1F4A1 inside any application (Code OSS, Notable, etc.). I just see a block (better: transparent block with border). All locales I have installed (English, German) are UTF-8. Is there a fix available? Already tried to find something on the web but without success.
settings on my Ubuntu 18.04: in VSCode I use Hack, 'Roboto Mono', Consolas, 'Courier New', monospace . Configured (via Tweaks): Window Title Ubuntu, interface Ubuntu Regular, Document Sans Regular and monospace Roboto Mono Regular.
The character mentioned in the OP is an emoji and is not provided by Roboto Mono, Consolas and others, you need some additional fonts. U+1F4A1 is a lit bulb, I could display its monochrome version since ttf-symbola is installed on my system, for the colored ones I guess you need an emoji font such as noto-fonts-emoji.