Sorry, French here indeed. It is strange. I have made that mistake for several years when writing in English fora but recently, in the space of two months, I got several people making me noticed this. I am trying to lose this habit in English but why is it that this mistake is now fought more thoroughly? Has there been a particular event raising the awareness of this?
>Has there been a particular event raising the awareness of this?
Not that I know of. You probably just started hanging out with people who tend to complain about this kind of thing. I, for one, complain about this stuff because it's a defect I have to fix if I happen to see it in someone's copy.
It also might be a frequency illusion [1].
[1] The illusion in which a word, a name or other thing that has recently come to one's attention suddenly appears "everywhere" with improbable frequency. Sometimes called "The Baader-Meinhof phenomenon".