I came across a piece in my piano syllabus. It’s called ‘Terminal 2’ by Nathalie Béra-Tagrine. The piece is in 3/4 time signature. It starts with an anacrusis like below:

However, the last bar still has 3 crotchet beats:

AFAIK, since the anacrusis has 1 crotchet beat, the last bar should have 2 crotchet beats. Why does the piece have 3 crotchet beats in the last bar?