When it happened a third time, I switched into full “research and destroy the problem” mode. One of my Ars colleagues commiserated with me, writing, “This kind of powerful-annoying stuff is just so common. I swear at least once every few months, some shortcut or whatever just stops working, and sometimes, after a week or so, it starts working again. No rhyme, reason, or apparent causality except that computers are just [unprintable expletives].”
Source: Sometimes, it’s the little tech annoyances that sting the most – Ars Technica
That’s cos most IT people think their way is the best way. Particularly UI/UX developers.