AI gunners not doing their job

Hello there.

I just picked up navy again after some time away, and found a strange ‘bug’…

My AI gunners on my destroyer will not target enemy ships, that is larger (Cruisers) than itself.

It feels strange to watch your ship get destroyed while your AA/Auxiliary guns are just sitting on their hands…

Is this a bug or a feature?

They normally don’t engage destroyers and larger unless you manually control them.