Syrian brown bear locked itself out at Allwetterzoo Münster

I am not sure if you can call this stereotypic behaviour, though at least it is compulsive behaviour as the bear showed this urge to go inside during a very long period while I was around. And even when I returned to the enclosure after 30 minutes it was still 'polishing' the door. The bear clearly does this all the time as you can see the door shows signs of wear at the typical places where the bear scratches the door panel with its paws.