In my app there is a big image that forms the shape of the window. Usually it all works just fine but sometimes after I lock/unlock the screen it just disappears.

if I lock the sceen twice in a row the whole app disappears completely.

I use javafx-sdk2.1.0-beta-b13 and here the output of prism.verbose:

Prism pipeline init order: d3d j2d
Using t2k for text rasterization
Using dirty region optimizations
Prism pipeline name = com.sun.prism.d3d.D3DPipeline
Loading D3D native library ...
    succeeded.
Direct3D initialization succeeded
(X) Got class = class com.sun.prism.d3d.D3DPipeline
Initialized prism pipeline: com.sun.prism.d3d.D3DPipeline
OS Information:
    Windows 7 build 7601
D3D Driver Information:
    Intel(R) HD Graphics Family
    \\.\DISPLAY1
    Driver nvumdshimx.dll, version 8.17.12.8562
    Pixel Shader version 3.0
    Device : ven_8086, dev_0126, subsys_04931028
RESIZE: 4050011066633 w: 1624 h: 1624