"AI should not make changes to the empire during a Simultaneous Game"
Note, however, that the AI has a rather "creative" interpretation of what "not make changes" means. (In other words, the option doesn't quite do what you'd expect.)
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Cap'n Q
"Good morning, Pooh Bear," said Eeyore gloomily. "If it is a good morning," he said. "Which I doubt," said he.
YES! I'm not entierly sure what the AI thinks "no changes please!" means but i think it was opposite day when that was implemented. Just use NO AI MOD from now on, or be careful submitting turns.
Unless the AI declares war on your long time ally (which can totally F*** up an empire if you are sharing defense, resupply, preparing for a big offensive) it is pretty easy to fix the ship design thing, and any new construction queue items.
MM is doing a great job and this is just a small thing in the grand scheme of thins, probably more related to ppl's carelessness using PBW than anything else.
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