This one is just puzzlement.
When I was growing up, there was a consonant used to begin certain words by all classes of people: "WHat WHen WHere WHy WHether WHerefore WHet WHip WHey" -- got the pattern? at those WH places, there was a strong breath through narrowed lips, good enough to put out a candle or blow a paper. It showed up on WHy with added emphasis for many people when they didn't understand how they could possibly have deserved the disaster they were facing.
For my daughter, on the other hand, those words have no "H", and no breath. "Wut, Wen, Were, Wy, Wether, Werefore, Wut does Wet mean, Dad? Wip, Wut does Wey mean, Dad?"
If it began with WH in the dictionary, it had this sound. But doesn't now, and causes its own occasional confusion as a spelling problem.
Are there any other consonants disappearing that I should have noticed?