Defensive pact seems broken?

[shi4stone]

Not sure if this is right place to report suspected bug, but i just leave it here
in my game and confirmed by a few others with similar experience, AI in defensive pact wont join war if player was declared on by another AI, nor would the player be required to join a defensive war if AI ally is attacked.

[firemad]

Yeah it's broken. I saw it too.

[baldamundo]

Had the same experience. Altho i was so vastly more powerful than anyone else at that point that I did wonder if the other empires were just too scared to join...