[ScrollablePositionedList] Positions of itemPositionsListener not return the correct values when use initialScrollIndex

[GustC]

Problem description

When use the argument initialScrollIndex on ScrollablePositionedList, the values of itemPositionsListener not represent the correct values showed on scroll list. If the initialScrollIndex set on 0 the itemPositionsListener returns the correct values.

Steps to reproduce

1. Create a ScrollablePositionedList with 100 elements;
2. Adding listiner on itemPositionsListener to see the positions elements when scroll list;
3. Set the initialScrollIndex if any value where index is not visible initialy on list. (example: 50);
4. Scroll the list to index 0;

Demostration

Expected behavior

• The first element on positions need represents the first element showed on list.
• The last element on positions need represents the last element showed on list.

Actual behavior

• The first element on positions not represents the first element showed on list, in the Demostration the index of first element is 9 but the true index of first element showed on list is 0.
• The last element on positions not represents the first element showed on list, in the Demostration the index of first element is 0 but the true index of last element showed on list is 9.

Environment

scrollable_positioned_list: ^0.3.8

[HyunByungJoon]

same here too, does anybody know how to fix it?