Hi I answered this at another thread, but the update fix the problem but introduced another. I had to change the input button from triangle to L3. This fixed it, but I can't use triangle as my primary input anymore.

I downloaded the update and went to the lame man, now there was a promt but nothing happened when I hit triangle. I fast traveled to see if it fixed it and as I was about to mount my horse I saw that I couldn't do that either. I had to change my primary interaction to L3 to mount my horse. This fixed the lame man too

I encountered this bug as well, I thought maybe fast traveling might help. I started completing different quest and are now a couple of hours after I first encountered the bug. I stopped play because I wanted the platinum trophy, now DLCs are coming out and I thought, maybe it is fixed. But no, I'm running patch 1.2.1 on ps4 pro and the button interaction to pick up the lame man is not there. Please fix this as I have a 100h save and don't want to start a new save just to get this mystery fixed. Maybe if you introduce a new game + function I would be interested.