gform_post_paging parameters don't match $form[ "pagination" ][ "pages" ],

pages (Array, 4 elements)
    0 (String, 10 characters ) Konverents
    1 (String, 7 characters ) Majutus
    2 (String, 13 characters ) Kontaktandmed
    3 (String, 11 characters ) Kinnitamine

OK, we have zero-based indexing.

But inside gform_post_paging:

$coming_from == (String, 1 characters ) 3
$current_page == (String, 1 characters ) 4

Why one-based indexing?