That doesn't usually happen, though. For example, if you type three '=' symbols in Firas Code or JetBrains Mono, you get ≡, but if you type a fourth '=' it sna

That doesn't usually happen, though. For example, if you type three '=' symbols in Firas Code or JetBrains Mono, you get ≡, but if you type a fourth '=' it snaps back to '===='. I can invent some odd situations where I get a ligature in the middle of a string, but in actual coding (for me 80% JS, 10% HTML/CSS and 10% Ruby) I simply don't see any incorrect ligatures.