In 3d displays the default camera is not #default

[lesquoyb]

Describe the bug
If we set explicitly in a 3d display the camera to #default we observe a different rendering than what we have if we do nothing. This could explain why 3d displays tend to not fill the available space (as mentioned in #3557) as the #default camera fills the whole space.
However it seems like the default one is also faulty as it's lacking a part of the world (depending on your model), as you can see here:

/**
* Name: casts
* Based on the internal empty template. 
* Author: baptiste
* Tags: 
*/


model casts

global{
	init {
	}
}

species dummy;

experiment name type: gui {
output{
	display plop type:3d axes:true{
		camera #default;
	species dummy;	
	}
}
}

on my computer this model produces this:

you can see that it's missing the top and bottom of the world. On some other models I'm missing some of the left and right parts.
Going further, if you don't set a camera in gaml but switch camera on the fly with the toolbar you will never be able to go back to the initial camera.

To Reproduce
Steps to reproduce the behavior:

1. copy paste the previous model
2. Run it and observe that the world doesn't fit the display
3. remove the camera #default statement
4. Run again and observe that the world fits the display

Expected behavior
The default camera is the same as #default, and it shows the whole world