Looking at the Avherald report, I can't see any obvious problem with the lateral navigation. The aircraft seemed to join down wind in the hold and looking at the trajectory graphic, it even seemed to turn inbound at roughly the correct time. Compare it to the 10nm range on each.
I wonder about the comment- "The autopilot initiated a second left turn again consistent with a hold pattern rather than joining the final approach course." Was someone expecting it to turn the other way? Looking at the charts, it appears to be the same lateral path so why would that comment be made? Is it because of the diagram for the Cat A/B versus the Cat C holding?