[FLEX-25535] Odd label flicker in Spark ComboBox when setting selectedIndex to -1

• Type: Bug
• Status: Closed
• Priority: Trivial
• Resolution: Later
• Affects Version/s: Adobe Flex SDK Previous
• Component/s: Spark: ComboBox
• Environment: Affected OS(s): All OS Platforms; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 06/Oct/10 14:38
• Updated: 10/May/11 13:39
• Resolved: 08/Oct/10 14:22

Description

Found in 4.5.0.18027

Steps to reproduce:
1. Compile and run attached MXML file.
2. Select item "Two" from the ComboBox.
3. Open the ComboBox again and Ctrl+click item "Two" in the dropdown to deselect the item. The selectedIndex should correctly be set to -1.
4. Click the ComboBox control's neighboring "-1" button.
(5.) Do steps 2-4 w/ DropDownList.

Actual Results:
The previously selected item flickers briefly in the ComboBox control's internal text input and then disappears. This is odd since my selectedIndex is -1 and I'm explicitly setting the selectedIndex to -1, which i assumed would be a no-op.

Expected Results:
The previously selected item's label shouldnt flicker in on the s|ComboBox (it doesnt on the s|DropDownList).

Workaround (if any):
n/a