Incorrect skill levels and damage with weapon swap

Console: normal/base PS5
Version: 0.3.0c (prior to 0.3.1, which isn't out yet)

Recently I embarked upon using weapon sets and the weapon set passive skill trees. This enabled my Sorceress Stormweaver to use more powerful curses, while casting Temporal chains in weapon set 2, which is a wand with +4 all spell skills. She casts Arc with the main wand, which is a +5 lightning spell skills, with extra lightning damage, and gain cold damage. Naturally Arc damage should be higher in weapon set 1.

However, when looking through the support gems in the skills tab, I noticed that sometimes the Arc would have a much, much lower DPS number, almost a third of what it normally was (iirc, 37k instead of 90k). It also had +10 from global modifiers instead of the +11 that should be there (+5 on wand, +3 on focus, +3 on amulet). Then I noticed that this happened with other skills too. It would sometimes show +10 instead of +11, or +6 instead of +10, despite having a non-lightning skill as set to be used with weapon set 2.

I worry that this isn't just a visual information bug in the Skills tab, but that it impacts real damage numbers during combat too. Because sometimes against tough rares or bosses, it felt like my damage was significantly worse than normal.

Please look into this, and check whether this is an actual bug with how weapon swap/sets and cast spells function. If my character casts spells with the "wrong" wand, then DPS will crater as a result, and I naturally don't want that, because it can lead to my death in particularly rituals, breaches and abyss fights.

Another issue is that Elemental storm sometimes shows up with two skill lines in the game too, with the same support gems. I change one, and it changes the supports for both lines. Very odd. And it seems to have imported into Path of Building with two "lines" too. Maybe that is why Power siphon shows up twice as well.

I can't guarantee that all the info in the below profile is correctly set up, but I've attempted to do it correctly as to how it is in-game, with spell skills in the two different weapon sets (the focus is used for both, which is a fantastic feature btw!)

If nothing else, you can see the two different wands here and what mods they have.

https://poe.ninja/poe2/pob/e98e

Don't think I can attach images here, but inside PoB it shows up with very different stats, which make sense if Arc is cast with the wrong wand in set 2. Then the multipliers are much lower, at 172% instead of 438%, and with much lower crit chance, and lower level of the skill gem itself.