Bug in display of the tree when adding nodes dynamically?

I am building a tree dynamically, child nodes are added only after a user clicks to open a node, and a call is made to see if there are children.

The control is very sensitive, but after a few clicks, that it is as if an object of the same color that the background appears in the middle of the control tree obscuring nodes beneath it.

If I click on the empty area at the location where the darkened nodes would fall meet and expand/collapse becoming visible/invisible as they fall under this area or beyond. If I hover over the empty box I see the node highlighting as a strip about 5 pixels wide on the left side.

Revalidation of the tree redraws not this area. Has anyone seen this before, and how can I fix it?

The problem disappeared. I think it was a bug is triggered by setting the selected items after I had updated the dataProvider and refreshing the tree.

I had another question where the selectedItems disappeared after update of the tree. I fixed it by setting using callLater() selectedItems, because put immediately after the update the dataProvider of the tree did not work as long as the selection was lost anyway. callLater to do this fixed the issue of the selection and now apparently also the issue with a section of the tree being overshadowed.

Tags: Flex

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