Very bizarre skill gem bug - Tempest Flurry gem completely bricked

As the title says - I'm not 100% sure still what caused it exactly, it was at some point during a big build refigure I was attempting before deciding I needed to put it back how I had it, but somewhere along the line my +20% quality 3 slot Tempest Flurry skill gem got bricked. As in, it doesn't work, and the game doesn't seem to know what to do with it, as if it somehow got data corrupted. I closed the game last night hoping it might somehow be a fluke and be resolved today, it is not.

Basic facts:

1) Despite being slotted and having no unmet requirements, Tempest Flurry does not show up to bind to a key in my ability bar.



2) When I open the detailed stats for Tempest Flurry, it has a few different errors. As you can see from the above, it has no listed DPS - it should.

Furthermore, by default it says "This information is currently unavailable" which is obviously not supposed to happen. There's also a strange bug at the bottom where you usually checkmark which weapon set it's set to work with, and not only does it show not 2 but 4 different weapon set configurations (was that at one point being developed and got left in the backend? it's kinda funny), it's also trying to show UI for setting number of minions per set.



3) It gets a bit weirder still. If I open up another skill's stat page, and then go back to Tempest Flurry, instead of the previous 'info not available' error, it shows that skill's information instead.

Here you can see Gathering Storm's stat page while Tempest Flurry is selected, but it shows the skill gem icon of Tempest Flurry at the top instead



I've tried various methods to unbrick this, taking it out and back in, logging off and on, etc. etc. and nothing has had any effect, so I think my skill gem is just corrupted (and not in the fun Vaal way).

I have no idea if it is related, but prior to this I was having a lot of issues making Ghost Shroud work correctly on both weapon sets, where it would show as activated on both but not actually function on one of them (I could tell because it wasn't ticking up shrouds over time) until I deactivated it and activated it again. This would reset and stop working again every time I made any changes to support gems etc.

In any case, it's not the worst thing, and I can just carve another Tempest Flurry and put a lesser jeweler's on it, but losing the 4 gemcutter's prism kinda stings. I'm just glad I didn't put a perfect jeweler's on it like I almost did.

This happened to me too when I basically deselected both weapon 1 and weapon 2 from using the skill. There was nothing I could do to fix it and I ended up having to throw the gem away. I thought it was exclusive to my unarmed skills tho, if it happened to tempest flurry it's likely then something to do with weapon not being on a slot or weapon swapping.

I was messing around a lot with weapon sets trying to see if I could split my build with 2 sets (I had only been using 1) so its very possible it's related somehow. I don't know if I did the exact same thing you did, but there's clearly something wonky going on with skill gems and weapon sets somewhere in there.