As soon as Winnetou and Ribanna go into the cave, she suddenly wears pants beneath her skirt, although she didn't wear them a few seconds prior, when they were outside of the cave.
The Teddybear, which Old Shatterhand picks up from the Demolished Treck was made in 1902, the movie plays in the 1860s.
As the various chiefs arrive for the peace meeting, a bus can be seen far in the background.