We use 3.0, but still 3.1 also has this bug.
We are using textblocks as 3d elements in our world and we need to be able to select them, but it's not possible right now.
I've created reproducible scenario.
Open IntegrationGLUT example, go to

static void DisplayFunc(void)

add this code in the beginning

const auto perspective = Noesis::Matrix4::PerspectiveFov(90.0f, float(glutGet(GLUT_WINDOW_WIDTH)) / float(glutGet(GLUT_WINDOW_HEIGHT)), 0.01f);
const auto viewport = Noesis::Matrix4::Viewport(float(glutGet(GLUT_WINDOW_WIDTH)), float(glutGet(GLUT_WINDOW_HEIGHT)));
const auto offset = Noesis::Transform3::Trans(0.0f, 0.0f, 500.0f).ToMatrix4();

const auto prod = offset * perspective * viewport;

_view->SetProjectionMatrix(prod);

You will see that layout moved, but when you will try to click on button, it will be unsuccessful, because hit test still works in old projection matrix in 2D. Just try to click on this imaginable 2D position without transformations.