• Make sure you actually installed Fira Code
• Make sure the font your editor displays is actually Fira Code
• Make sure you’ve enabled ligatures in your editor
• Make sure you’re on the latest version of Fira Code
• Characters look weird, not monospaced, not rendered at all
• Font looks blurry/bad on Linux/Windows
• Hinting issues
• Powerline characters are of slightly wrong size
• Some ligatures work while some don’t
• Corrupted font in IntelliJ on Windows
• No italics/bad italics
• Not recognized as monospace by fontconfig (e.g. in Kitty)