Problem of object positioning...
Would be silly if you went a week chasing all kinds of software problems and it turned out to be something that simple, wouldn't it?
For some reason - some of the URL's are getting a "%E2%80%8B" plopped into the middle of it. I pulled that out, and put the resulting link up above, which also for no reason that I can explain - now works.
Oh, and, I tried with another mouse, same thing. And it appears that it's only in The Sims 2... O_o