In this animation https://sketchfab.com/models/e0d47a0f93fd42d18a4a34509362b1d5
there are three similar objects ( 2 large and 1 small ). At 17:00 seconds these three objects reduce their size by 10 times but we cannot see this diminution in this position .
When we change the point of view , this reduction is visible.
Do you know if it is a bug ?