That paragraph you quote refers to something slightly different: it describes how units are assigned when the player orders training using a selected group of barracks. Even when resources are available and auto-queue is enabled, this behavior occurs in the same way if the available resources are not sufficient. As for whether barracks should remain with auto-queue enabled or not, I addressed that earlier above: Now, I think you are referring to something beyond simply keeping auto-queue enabled, and you are advocating for a fully automated training system. That is highly debatable from a game design perspective and can hardly be considered “a bug.” There are plenty of successful RTS games that do not automate this aspect.

You just confirmed my words. Read your text again.  So why are the barracks or buildings "unused."? Because the queue ran out for 1 second an hour ago. But this moment was missed. With this quote, you have just joined the Auto-Queue fan club

LOL at that one alpha where CS unit ranks were disabled. Talking about alpha 18, that last alpha where we didn't have capture system. Imagine having 100s of basic CS going into battle, storming Forts with armor as just an afterthought. I change my vote, best alpha for sure.    

I know its like a specific building hotkey but what about Control Groups like will it cycle? I tend to juggle my Control groups in 1 to 2 to 3 to 4 and when I become competent will I involve more then Barracks be it Stable, Mercenary building, Siege building such and such and I rather have it in Control Groups because its changeable on the go~

This is already solved here: https://gitea.wildfiregames.com/0ad/0ad/pulls/7806 and will be available in R29