Essence Drain Bug

I am playing as the Witch, and I just ran into a problem with Essence Drain getting removed from my skill bar. I recut the skill using an uncut gem 5 different times. Essence Drain will then work for me until I quit the game or use a waypoint to teleport. It will then get removed from my skill bar and I can't drag it back or assign it to a hotkey. When I click on the arrow to show the information for the skill, it shows up as a different skill or it will say this information is currently unavailable.

I uninstalled the game and reinstalled it. Recut the skill and it has been working fine since.