Hello.

I am creating this post because I have managed to acquire video evidence of a perceived malfunction related to the Blastbones skill. In this specific case I was using the Blighted Blastbones morph, however it should be noted that what is showcased in the video can and does happen fairly regularly to both morphs.

I will follow up with an analysis/breakdown of the footage linked above:

• 0-5 seconds: the character is looking at a targetable entity - in this case the "Target Iron Atronach, Trial" dummy within a house - and the third skill on the ability bar visible below, Blighted Blastbones, is heavily greyed out. There is no way that I know of to provide evidence that I was attempting to cast the ability during that timeframe in order to exclude a purely visual bug, so you can only take my word for it.
• 5-12 seconds: up to this point I had been looking at a targetable entity I was not in combat with, therefore I engaged the dummy with some other abilities to exclude combat state being a factor: indeed Blighted Blastbones remained heavily greyed out and my attempts at using the skill did not produce any result.
• 12-24 seconds: I unlocked the cursor and showed the skill's tooltip, then hit the dummy some more and attempted looking away to reset targeting. Nothing I did affected my inability to cast Blighted Blastbones.
• 24-30 seconds: I swapped to my other ability bar and then back to the bar where I have Blighted Blastbones slotted, I was then able to cast the skill again.

I sincerely hope this information will help in troubleshooting this issue and ensuring that such an unique, core skill for Necromancer is not affected by this issue in the future.
Thank you for your attention.