Load 3D image (e.g. Pic3D)
Load 4D image (e.g. DataSet_Lung4D)

Zoom out a little in a renderwindow view.
Click somewhere in the renderwindow , a little outside the images.

Crash.

Problem is apparently caused by
QmitkStdMultiWidget::HandleCrosshairPositionEventDelayed() Line 1651

The function
itk::Image::GetPixelValueByIndex(const itk::Index<3> & position={...}, unsigned int timestep)

is called with a timestep != 0 for a 3D image, which crashes.

Here should be check if the image contains data for this timestep, and if not, a message like "No Pixel information available" should be displayed in the status bar.