AI Spamming Troop Transports, Bug?

[Hansolo88]

After strategist83 reported the same thing happening to him, I want to see if anyone else has experienced this, since it is a potential bug:

Settings: 1.1 Beta 4, upgraded to Beta 5 halfway through game

Tiny galaxy, myself (Terrans) vs. the Arceans

Arceans declare war, attack with a few fighters. Later they attack with some troops transports. Then more troop transports. I look at their planets, every planet they have (about 10) is doing nothing but build troop transports, even though I have destroyed all their fighters. They continue to build nothing but troop transports even though I am destroying them as they are built and launched.

There is no way the AI is supposed to behave that way, has anyone else seen this behavior?

[Peets]

I find out why they do it.
When they know your planet has no ships in it, they'll start using this strategy. A bug for sure.

[Strategist83]

I don't get it. Where do you find beta 5?

[Hansolo88]

Strategist: Sorry the name is not Beta 5, it is Beta 4a (Brad should have just called it Beta 5 though).

Peets: I think you might be right, they see a planet with no ships and that seems to trigger it, even if you add defensive ships to the planet later.

[Purest Warrior]

I've seen the AI goofing around with transports even if I have no undefended planets.
I haven't been attacked by them, though (i usually take them out before, I think).