The result that is being logged is execution of ajax (javascript with php). A search engine is looking at the page. The "problem" that you are seeing is that the page is loaded, and then another page is loaded through ZC which when "recording" the current/last page visited appears as if accessed the ajax file. This has nothing to do with the actual loaded page. I don't know what you would rather see in your look at who's online, but as said in monitoring clicks/pages loaded through say User Tracking, the ajax action doesn't get registered and considering the use of that ajax call, there is no reason to show anything different/new.
How do you think that the information presented in who's online should relate to a search engine's results?
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