As a kid growing up in USSR I remember this cartoon, it was one of the most dreadful cartoons they could show on TV.
Later edit: Damn it, because nostalgia has kicked in and we're talking about Eastern European animation, I also have to give a big thumbs-up for the Bulgarian National Television's opening sequence of its daily cartoon show from back in the '80s-'90s, an example (of many) being this one: https://www.youtube.com/watch?v=6YLmLx53ZvM , the Polish Lolek and Bolek (https://www.youtube.com/watch?v=yiiULpdnVrY) and the Romanian Balanel and Miaunel (https://www.youtube.com/watch?v=s_F2IVgjasc)