This is a bug that annoyed me occasionally when leveling but almost cause me to die on my HC character today so I figured I’d post it.
Hammers(Possibly other projectiles as well?) despawns and/or can’t be spawned in certain areas. This time it was against The Husk of Elder Gaspar, the boss in The Last Ruin Monolith where at the upper part of the arena this is occuring.
15sec video provided from after fight to demonstrate:
Hammer Throw bug