Glad to hear, that's a plus for me for German foods then. It was actually the French-speaking part of Switzerland, the Coop stores (which is strange because otherwise they sell great cheese). What's even worse is that after two or three days I was getting accustomed to that sweetish yogurt and I was starting to think that that was its natural taste.
Like I said, after a couple of days even to me it started tasting “normal”, but at first it certainly tasted more sweet compared to what I can usually purchase in my country. Different to what I was accustomed, yes, but also more sweet. For comparison I never had the same issue while buying yogurts from Greece or ayran from Turkey. They also tasted different to what I was accustomed but not sweeter.