Handle multiple pages PDF scan

For me, it was a basic feature, but I juste discovered it’s not working : when I send a PDF containing multiples pages (generated by a scanner and sent by mail or manualy uploaded, only the first page is analyzed !
Expected behaviour : each page should be analyzed as a separated receipt (I acknowledge that some receipts may be over 1 page long, I guess it then possible to merge 2 documents to make one)