Apache flex 文本区域滚动条中的错误

我在这方面有问题。当文本滚动到底部，但滚动拇指不在末尾时

例如：

AS3

[Bindable]
private var txt:String = "Challenge.\nTo make lighting an integral element of this chic and sassy business hotel, creating a sense of freshness during the day and romance in the evening.\nOverview.\nWedfssgs is a four-storey boutique design hotel which aims to differentiate itself from other conventional hotels by being fun and innovative. The hotel aims to create a unique experience for guests — a place that is cosy, personal and home-like. The core design theme is about celebrating being singular — no two of the seventeen rooms are the same.\nProject Requirements. Creation of a fun and innovative place that differentiates itself from other conventional hotels. Creation of a home-like and unique staying experience for hotel guests. Management of lighting and control of tropical sunlight throughout the property. Provision of distinct atmosphere during breakfast, lunch and dinner operations for in-house contemporary restaurant — Lucas. Design for a Memorable Stay.\nRenowned designer William Sawaya of Sawaya & Moroni set the design tone of klapsons as “contemporary luxury”. Welcoming the guests upon arrival at the hotel is a unique stainless steel sphere that functions as the reception and check-in desk. The ceiling, like the sphere, is designed to harmonise and bring life to the entire lobby. Made up of three tiers of free form organic shapes, it invokes illuminating lights that flush the entire lobby in hues from the colour spectrum. Surrounding it is the hotel lobby that is equipped with a modern LED lighting system where the background tones can vary to match different moods at different hours of the day.  \nThe same design flair is also found along the corridors leading to the guestrooms, in which profiles of light indicate the doors.  To obtain the largest possible number of rooms, the space of each room has limited width but extends considerably in depth. Whether it's a choice of the standard rooms or the klapsons suite experience, the guests would expect a thoughtfully configured room with a unique setting. Redefining the notion of the bath, shell-shaped and cylindrical-styled showers, even an open-cube rain shower flanked with full length mirrors and colour changing LED lights have been incorporated for an unparalleled experience.\nAll indirect lights are LED-powered, giving off a sense of freshness during the day and a romantic ambience in the evening with alternation of colours and light intensity.  To achieve this effect without increasing operational and maintenance costs, the hotel has specified Qwreew's QWER™ QWRQTefds Wwetwd System as the main lighting controller.  All changes of light settings at different times provide the option for wqtretqw' staff to manually select the appropriate preset lighting scenes to suit their needs.\nWhen guests at the hotel insert their key cards to enter the rooms, lights inside the guestroom will be automatically turned on to a day-time welcome mode — both the day and night curtains will open automatically and silently;  soft lights will be switched on in the darker parts of the room.  Upon entering the rooms at night, a night-time welcome mode will be turned automatically on. The night curtains will be drawn, the day curtains closed and a warm light activated.";

MXML

<s:TextArea width="400" height="250" borderVisible="false"
    paragraphSpaceAfter="15 paragraphSpaceBefore="15" textAlign="justify"
    editable="false" selectable="true" fontSize="16" text="{txt}"/>

---

我将您的代码粘贴到一个应用程序（Flex 4.6 SDK）中，滚动条/滚动条拇指的行为正常。看起来您正在单机Flash Player中运行代码，您在浏览器中尝试过吗？您使用的是哪个SDK版本？非常有趣。。。我也使用Flex4.6和TLF2.0。如果我洗牌文本中的所有字母，有时我会看到所有字母都正常工作。我在浏览器（IE）中以独立版本运行它，结果也一样：(
<!--- Defines the scroller that is used to scroll the TextArea control. -->
<s:Scroller id="scroller" left="0" top="0" right="0" bottom="0" 
    minViewportInset="1" measuredSizeIncludesScrollBars="false"
    hasFocusableChildren="false">
    <!--- @copy spark.components.supportClasses.SkinnableTextBase#textDisplay -->
    <s:RichEditableText id="textDisplay" heightInLines="10" widthInChars="15" />
</s:Scroller>

<!--- Defines the scroller that is used to scroll the TextArea control. -->
<s:Scroller id="scroller" left="0" top="0" right="0" bottom="0"
    minViewportInset="1" measuredSizeIncludesScrollBars="false" 
    hasFocusableChildren="false">
    <!--- @copy spark.components.supportClasses.SkinnableTextBase#textDisplay -->
    <s:Group mouseEnabled="false">
        <s:RichEditableText id="textDisplay" width="{scroller.width - 5}"/>
    </s:Group>
</s:Scroller>