Afaik, no far-right parties were banned under the law. There are a lot of Banderites in Ukraine and that's where "Slava Ukrani" comes from. Bandera worked for Nazi military intelligence and wanted an independent Ukraine closely allied with Nazi Germany, and enthusiastically performed pogroms on his own initiative (denying his role in the Holocaust was specifically what happened with the Ukrainian ambassador). The only thing was that Hitler didn't want Ukraine as an ally but under his direct control, so that's where they came into conflict.