@Sarbat:
Spanish version here too, and also the disappearing took place after changing to a custom music track. Solved the problem doing a full uninstall/reinstall (I mean deleting anything cIV related on my PC (including Windows Register). Now, it is working without any glitches (of course not touching that custom music option until a patch that solves it comes out).
I do not now if this is related or not but, has someone noted the '?' icons on the City List screen (the one showing when you press F1)? Anyone know if that is a bug or feature (kind of weird if it is a feature for it is shoing values under all of the '?' columns. Maybe only in EU version?