Hi! actually… it’s a pretty random bug. it happens on my personal computer as well as in many of the machines in the school I teach, and it happens randomly amongst my projects…
Usually restarting the editor solves it, but sometimes just by changing my system’s language/keyboard language settings and leaving my PC Idle for some time also solves it… (My keyboard is currently somewhat broken, I’ve considered if my keyboard isn’t auto-pressing some random keys that could toggle that behaviour on/off… but the same bug happens on many of the machines in the school, so… no Luck there…