1. A concise explanation of the problem you’re experiencing.
if I “flyToBoundingSphere” with a pitch = -1.5707963267948966 (that I think should be view from top)
the camera look right, but the mouse doesn’t work anymore,
so no zoom, no pan, etc.
if I set the pitch to -1.55 it work a bit,
if I set the pitch to -1,52 it work again.
2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.
var pitch = -1.5707963267948966;
var offset = new Cesium.HeadingPitchRange(map.initHeading, pitch, 0);
4. The Cesium version you’re using, your operating system and browser.