I don't know that I've ever seen this "AI adjustment" thing. Every time I lose a crucial wonder and feel it's detrimental to gameplay if I don't reload the save (Petra or something), I know what turn they get it on, and I can adjust accordingly and beat them to it. It's always the same turn for early wonders in my experience. I've never had this "repeatedly lose" phenomenon happen.
Late wonders -- well, that shouldn't be an issue either, because you should either be building them as the first one to the tech, or you should know other AI have it and not bother.
Late wonders -- well, that shouldn't be an issue either, because you should either be building them as the first one to the tech, or you should know other AI have it and not bother.