Lightning Warp not being recognized by Thundergod's Wrath on Weapon Set 1

I am playing double dual wield Mjölner Titan right now and after upgrading the Lightning Warp gem on weapon set 1 this bug started appearing and it is no longer possible to use the gem.

On weapon set 1 (and only there) Thundergod's Wrath (no matter which of the multiple Mjölner weapons I tried!) does not recognize Lightning Warp as being socketed. All other lightning skills (tried them all) correctly show an energy amount and are triggered - all except for Lightning Warp, which doesn't show an energy value/bar. Even when combined with other skills, Lightning warp never gets recognized as being socketed.



On weapon set 2 Lightning Warp gets properly recognized and calculated (the energy gain is different because of slightly different skill trees which after some testing showed to have no effect on this bug):



I tried all of the below on weapon set 1 (again - it works on weapon set 2):

- different Mjölners being equipped (one handed, dual wield, combined with other weapons or shields)
- different gem levels
- reset skill tree
- unequipped everything else
- relogging
- combining with different other skills
- all other lightning skills work correctly


This basically bricked this character right now :-(


Bug Report ID: #2784572355