Just now am out in the open, and I'm tracking an Indian, but when I go to climb a tree that has obvious handholds, I see him doing the animation to climb, but then it's like it goes into reverse and I fall off. Plus, I found a knocked over tree that led to some stumps to jump across but when I jump to the first one, he immediately falls off. Is this a glitch?
Where are you talking about? Black Creek? Monouth?
It would be best to upload a video with the exact place. I know I struggled with a few of the feathers in the frontier, but finally got them once I realized other paths/ways were available. . . And from what I have seen, collecting all the feathers leads to a pretty sweet item.