Issue on mapped image

I am using the Page scroll to id plugin on a mapped image and it works partially fine.
The mapped image is on a slide: “Slide Revolution”. Each slide has 4 mapped areas.
For the first slide, the 4 mapped areas redirect correctly to the desired page and scroll down to each section with the anchor:
Slide1 mapped areas on click redirect to menu item with: # section1, #section2, #section3, #section4. That works fine.

Slide2 mapped areas redirect to the same menu item with: #section5, #section6, #section7, #section8
But from slide 2 when I click on a mapped area it goes well on the concerned page but it doesn’t scroll down further than #section4. So mapped area from slide 2 or 3… and linked to #section5 or further are not scrolling down further than #section4.
Strange, how to solve this?