I guess the reason Allo Allo was so popular in Poland was the fact that Poland and Poles were never mentioned once
I'm sure vast majority of Poles wouldn't have been offended If they have included a Polish guy being drunk half the time, stealing German military vehicles, hidding chased by 3 women, each being a mother of his child etc. If it was done the way other nationalities were portrayed there. The problem with German jokes about Poles is that they use to show some guy, who smell of cow ****, his kids are ugly and dirty etc. and that's not funny, that's simply pathetic.
in Poland jokes about Germans are rare and always in good taste.