When user call scrollable api within the scroller callback callstack,
some api doesn't work properly because internal value of the scroller is not stable at that time.
In attached project, button makes window resized.
page_show() api will be called inside the resize callback.
requested page number was calculated on the scroll callback previously.
however, the page number is wrong because current_page_get doesn't return proper value inside scroll_cb.
I'm writing this task to get your excellent opinion,
because this problem looks like structural problem (lack of reference transparency)
If someone give me some advice, I do want to improve it.
- build/run attached project.
- go to the bottom.
- click button 3 times.