I had the Same Problem but Finally Figured out what I was doing wrong. In this case it was not a bug but it still buggy the game. But after the Battle facing foward the right chain needs to be Grappled and put the Dummy there then Heal the Chain Half Way. The Grapple point is hard to see with the sun and the glow is hard to see.
I have a different issue. My chain is intangible. I have it in position but Kratos just falls through it. I'm going to have to try wasting EXP on Ice for Findlestick's exploit to IJ to get around it, but there is no guarantee I can get enough height or that the area above will even be loaded properly. This coupled with reload taking away my club and giving me a Javelin. I'll try chapter select, but this is unacceptable. *tests* Cute. It loaded me at the start...with the f***ing Javelin. That their idea of a joke? Start you with a limited WW you didn't have? At least there was a fight with Club users right away. Let's see if the glitch occurs again (aside from a curiously untetherable Satyr Grunt). Nope. But fixing it all the way then breaking it seemed to work. Sloppy work. Lots of similar such failings in this offering. Inexcusable.
I didn't have a problem the first time through the game but did when I went back for the trophy. I will try the suggestion listed in the thread and hopefully it works.
As for the untetherable Satyr Grunt, was he armored? I encountered this before and figured out you have to break the armor on the ones that have it before they can be tethered. However I've also encountered unarmored Satyr Grunts that still couldn't be tethered, which I've yet to see any reason for aside from a glitch.
The gods overestimate themselves.