PoE 2: Can't advance the skill tree if the requirement for a joining node are only in weapon sets

I'm playing sorc and early on the skill tree there's elemental damage that splits off into the three elements then re-joins into a single node. Here I'd expect that I can assign Cold Damage and Path of Winter for weapon set 1, and then assign Fire Damage and Path of Flame for weapon set 2, and still be able to assign a point the the next Elemental damage node without a weapon set. But you can't since the game thinks it's requirement isn't met, even though it is met in both weapon sets, and one is always active.

As a workaround I can go though another route and get that last Elemental Damage node "from above" but it's not intuitive