Rafael, it almost looks like it's fermenting.
My Preto is pretty small (cutting from Encanto March '13) but the few figs it's had don't have the ostiole facing straight up like that.
Maybe that's a normal drop of honey that's bubbling because of the fig's position.
As for the first fig, could it be that the pot got spun or shifted, and the fruit caught too much light, too quickly, at the wrong time?
I hope it's not some disease, and the others ripen normally. Heck of a thing to happen after waiting 100 days.