CC3Camera uniformScale weirdness

[zhiva]

From CC3Camera.h:

Therefore, for cameras, the scale and uniformScale properties are not applied to the transform matrix. Instead, the uniformScale property acts as a zoom factor (as if the camera lens is zoomed in or out), and influences the fieldOfView property accordingly.
[..]
Once a nominal field of view has been set in this property, changing the scale or uniformScale properties will change the effective field of view accordingly (although the value of the fieldOfView property remains the same). Scales greater than one zoom in (objects appear larger), and scales between one and zero zoom out (objects appear smaller).

I made a cocos3d project (it comes with test layer: rotating, color-changing "Hello World"), slightly modified world code:

-(void) initializeWorld {

// Create the camera, place it back a bit, and add it to the world
CC3Camera* cam = [CC3Camera nodeWithName: @"Camera"];
cam.location = cc3v( 0.0, 0.0, 6.0 );
[self addChild: cam];
cam.uniformScale = 0.12; // <== added this line
and tried to run it with different values for cam.uniformScale.

Results: http://imgur.com/a/Pe9N9
Zooming out works as advertised only on (0.25; 1] interval. On (0; 0.25] it's all kinds of wrong.