[FLEX-34545] tree content does not display sometimes

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Apache Flex 4.11.0
• Component/s: mx: Tree
• Assignee: Unassigned
• Reporter: Bi Jane Jia
• Created: 17/Sep/14 07:02
• Updated: 17/Sep/14 07:04

Description

STEPS TO REPRODUCE:
===================
1. import the attached project and run it.
2. scroll down and find b1 in the tree. open b1-> b1_1 and select b1_1_1.
3. click "set moving target" button and confirmed "moving to b1_1_1" is displayed.
4. move the scroller to make sure b1_1 is the first item you can see in the tree.
5. click "move" button

RESULT:
=======
The tree content is not displayed and you can only see a blank view.

EXPECTED:
=========
The tree content should display correctly.

WORKAROUND:
===========
1) increase height of the mx:tree component
or
2) add tree.validateNow(); in the menuToMenu() function

The problem does not happen with other items in the upper part of the tree such as a1_1_1.