Camera glitches in orthographic projection mode

[javagl]

The "Projection" example sandcastle at https://sandcastle.cesium.com/index.html?src=Projection.html behaves strangely when zooming, both when using the mouse wheel as well as using right mouse drags:

• When zooming out from the initial view, the camera jumps far away from the model
• When zooming in, the camera orientation suddenly glitches out and moves the camera at some random position (slightly below the globe surface)

_Edit:

This only happens in the orthographic view, which is initially enabled as of
viewer.projectionPicker.viewModel.switchToOrthographic();

[ggetz]

My guess is that the picking code is returning incorrect values, making the cameraController jump around.