Page number on handouts is always 1 for every printed page

[conglt]

Dear Community,

I'm using OO 3.1 and found the following issue since 3.0 with handout feature.

I wanted to print page number on every handout page (not slide number). I added page number by Insert/Field/Page Number in handout view. (In another try, I also added page number by Insert/Page Number and checked Page Number in Handout tab). However, whenever I printed out the handout, the page number was always 1 for every page.

Is it a bug? If not, please help me how to print correct page number.

Thank you
Cong