I would presume it’s simply the historical western European bias finding a contemporary home. There have never been many Jews in Norway.
Most of the few Jewish families in Norway came either through the Haneatic trading in Bergen or the Danish administration in Christiana (Oslo). Many were prominent in business, government and the diplomatic service. Some were active in the Resistance during WWII. Quite a few of the formerly Jewish families converted to the rather loose state Lutheranism over the years (but would still have been considered Jews by the Nazis) - Norway is a country where there is great social pressure to conform to local norms.
If there are not a lot there why have any hatred. I don't recall any history there involving the Jews that has any controversy.