Called Shots Doesn't Activate on Weapon Set 2

Bug Report ID: #3478376860

I'm using Lightning Spear and a shield. I have sufficient attributes.

When I put my weapons in Weapon Set 1 (and set 2 is empty), Called Shot works.
When I move them to Weapon Set 2, or lock/copy weapons, Called Shot gets disabled, saying "Missing Socketed Skill". It seems like it's only working on Set 1.

I want to use my attack skill with Rigwald's Ferocity on Weapon Set 2, and due to this bug I can't.

Still looking for a solution to this. I can post images if needed.

Looks like it was reported before as well:

https://www.pathofexile.com/forum/view-thread/3855642
https://www.pathofexile.com/forum/view-thread/3854132