Newton scale limit?

Hi, I guess I found something weird...

I modeled a scene using a scale of 1 unit = 1 meter. Then, I modeled a cube of about 3.5 centimeters, or 0.035 unit. I used a tree collision with the scene, and with the cube I used a simple box collision.

The problem was: they didn't collide! Then, after three days of brain melting, I decided to scale the box and the scene about 10 times, and it worked...

Does anyone know if there's some kind of size limit when working with collisions?

Thanks in advance!
Edgard

I was looking at Newton's forums and seems like it's a bug that should already be corrected with library's last version (1.53). I posted this question there, too. Does anyone have more info about it?

Thanks,
Edgard