Burden of TIme --- does it affect computer players?

[Huzurdaddi]

So I was playing this solo game against a bunch of AI's and one cast Burden of Time.

It was pretty early in the game ( turn 23 )and I did not have access to astral gems ( Vanhiem ).

So I watch in horror as my ( extensive ) empire basically shrivles and dies. But what really facinates me is that on the income graphs ( and all other graphs, really ) I can easily notice where BoT was cast as my income steadly goes down from that point. However I notice that none of the other 12 or so computers seem to be affected.

Is this intentional? Is it a bug? Or perhaps they are doing something to defend themselves from BoT ( I thought that there was no defence other than dispelling it or killing the guy that cast it ).