Detailed description:
While playing my Warlock using Ghostflame with the Spirit of Dread node I sometimes find myself locked in the Ghostflame animation but without dealing any damage or generating any kind of stat linked to the skill.
What were you doing at the time?
At the time I was holding right click to keep my Ghostflame going, while using Transplant and Wandering Spirits on cooldown with some Chthonic Fissure here and there, without releasing right click.
How consistently does this happen?
This happens at least once on any content.