Cant slot Conductivity anymore !!! help !!

I used Conductivity for most of the time, but yesterday something happened and it disappeared from my skill slots, i checked everything 100 times, there is no reason why it should not be working, i am playing storm weaver archmage and conductivity curse is one of my main dps for boss damage, basically now its a dead spell cant slot it, is there any fix for this or has anyone encountered same problem?

Same issue. Any luck?

The only way i found solving this is crafting a new skill gem and getting rid of the old one, luckily i did not upgrade it too much so it was an easy fix, but i see how this can become problematic for people who min max their gem skill

This happened to me today too, so it's definitely not fixed yet. Disappeared from the skill bar when I upgraded to lvl 19. Had to make a new one (same level) and that one worked fine.