I am using VS2010 and have a problem when when opening my solution Workflow.xamlx does not display correctly.
Actions on the design surface are only drawn for the area that is initially visible when loading xamlx.
To demonstrate the problem, I see the following. (Sorry for the blur)

The first problem is that I cannot use the vertical scroll bar to scroll through the document. However, I can use the mouse wheel, which shows the second problem: all actions, custom or standard, are displayed as empty.

I tried the following
- Full installation of Visual Studio.
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- Visual Studio, , KB945140...
- "DisableHWAcceleration" WPF.
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