DAF

Just figured it out! on Xbox One, push "Y" to get on the wagon and sit. Pushing "X" will get Arthur on the wagon, but he will only stand.

I have had this same issue for several weeks. I did the save/wait/restart...did several other missions in the mean time...nothing has helped. This is a game ender because I can't trade anymore with Pearson. Is there any fix or other suggestions for this issue? thanks!