RTE #1009 in flashx.textLayout.container::TextContainerManager when scrolling

Steps to reproduce:
1. Run InlineGraphicTest.mxml using TLF 3.0 at http://sourceforge.net/projects/tlf.adobe/files/3.0/current/
2. Try to scroll (use mouse wheel for example)
3. Admire the RTE

Actual Results:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at flashx.textLayout.container::TextContainerManager/http://ns.adobe.com/textLayout/internal/2008::addInlineGraphicElement()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\TextContainerManager.as:2400]
at TMContainerController/addInlineGraphicElement()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\TextContainerManager.as:2538]
at flashx.textLayout.container::ContainerController/http://ns.adobe.com/textLayout/internal/2008::updateGraphics()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\ContainerController.as:3426]
at flashx.textLayout.container::ContainerController/http://ns.adobe.com/textLayout/internal/2008::updateCompositionShapes()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\ContainerController.as:3124]
at flashx.textLayout.compose::StandardFlowComposer/updateCompositionShapes()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\compose\StandardFlowComposer.as:616]
at flashx.textLayout.compose::StandardFlowComposer/updateToController()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\compose\StandardFlowComposer.as:559]
at flashx.textLayout.container::ContainerController/updateForScroll()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\ContainerController.as:1163]
at flashx.textLayout.container::ContainerController/set verticalScrollPosition()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\ContainerController.as:1029]
at flashx.textLayout.container::TextContainerManager/set verticalScrollPosition()[C:\Vellum\dev\output\openSource\textLayout\src\flashx\textLayout\container\TextContainerManager.as:850]
at spark.components::RichEditableText/commitProperties()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\RichEditableText.as:2637]
at mx.core::UIComponent/validateProperties()[E:\dev\4.5.1\frameworks\projects\framework\src\mx\core\UIComponent.as:8209]
at mx.managers::LayoutManager/validateClient()[E:\dev\4.5.1\frameworks\projects\framework\src\mx\managers\LayoutManager.as:957]
at mx.core::UIComponent/validateNow()[E:\dev\4.5.1\frameworks\projects\framework\src\mx\core\UIComponent.as:8067]
at spark.components::VScrollBar/http://www.adobe.com/2006/flex/mx/internal::mouseWheelHandler()[E:\dev\4.5.1\frameworks\projects\spark\src\spark\components\VScrollBar.as:562]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.managers::SystemManager/mouseEventHandler()[E:\dev\4.5.1\frameworks\projects\framework\src\mx\managers\SystemManager.as:2924]

After that, the application is unusable.

Expected Results:
Working scrolling.

Workaround (if any):
N/A

I'm writing a Chat application. The provided TextFlow is an export of the RichEditableText.textFlow value, where I replaced "words" by "xxxxx".

I'm using the TLF 3.0 swc available on sourceforge.net.

(If a fix is found, can I have a workaround to put in my app that I need to release soon ?)

Thank you in advance