Gloves Liarhs Machinations!

Convert Lightning Damage from Fire Damage 50% not working on Liaths Machinations Gloves!
Adds +2 spell, ignite shock envelope works, but fire envelope lightning damage doesn’t work on fireball when it should in theory! When I add lightning damage to the armor, the fireball damage does not change, although it should, the elemental damage also does not add lightning and fire damage!
I don’t know if they did it on purpose or it’s still a BUG!
Because even the nodes in the passive tree pumping lightning damage do not add damage to the fireball!
I think this needs to be fixed! Because the build can be powerful with such gloves, but it doesn’t work because the lightning damage doesn’t work!