[FLEX-25628] [PromptText] ComboBox displays whitespace character when no valid selection is made rather than returning to prompt text.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Adobe Flex SDK Previous
• Fix Version/s: Adobe Flex SDK Previous
• Component/s: Spark: ComboBox
• Environment: Affected OS(s): Windows; Affected OS(s): Windows XP; Browser: Firefox 3.x; Language Found: English
• Assignee: Adobe JIRA
• Reporter: Adobe JIRA
• Created: 14/Oct/10 17:24
• Updated: 10/May/11 13:37
• Resolved: 27/Oct/10 13:26

Description

Steps to reproduce:
1. Run the attached swf.
2. In the first ComboBox displaying the prompt text "Number?" open the drop down by clicking the drop-down button.
3. Press the down arrow to select the first item in the list.
4. Hit escape to cancel selection.
5. Note that there is no selection but no prompt (correct behavior, because the box still has focus).
6. Hit tab to move to the next component.

Actual Results:
The box remains empty. Selecting the ComboBox again will reveal that there is a whitespace character there, rather than nothing.
Also note that, although there is a whitespace character there that can be selected, the index is -1 and selected value is "undefined", indicating that nothing has been entered.

Expected Results:
Prompt text returns. A non-value is never present in the ComboBox display.

Workaround (if any):