Power nodes in POB2 doesn't work for Shield Wall?

Maybe your PoB is not configured correctly, can you post your PoB, so we can check?

Check your items section.

I recently allocated Giants Blood. It seems like PoB2 has an issue with it. When you put a 2hMace + Shield in your items, everything works fine until you click that little box for node power. Nothing will visually change, but the program will kick your shield out of your offhand.

It's listed as an issue on the GitHub since January.

Edit: Figured I should also mention. The only workaround I've found is manually editing the 2hMace to a 1hMace and adding values to it that account for anything missing from the base.