toggle and scrollview elements position problem

I have scrollview for show inventory items.
And its elements object activeness changes by selected category.
Now I tried to show some icon at some element's left side with same y position.

Problem is while changing category and element SetActive true and false.
Left icons Y position does not match with item's UI element.
Strangely. When this occur, after I click same item UI 3 times, Icon's Y position become legitemate with I intended. why and how tofix?