Some kind of mouse tracking issue on the levels with drag - I click, then the object jumps to the other side of the screen - then can drag... OS X Chrome
We don't try to be always politically correct, but in this case i think we are historical correct. It wouldn't be a big deal if we weren't but we liked the story of "going west" and we tried to reproduce some real facts.
Thanks for reporting. There was a problem on high dpi screens, it is now fixed.