You might want to open a support ticket.
Hammer Throw has many issues with dissapearing projectiles.
The weaver echo that you swap between 2 arenas similar to Julra dungeon - monsters standing near the center are invulnerable unless you’re standing in their models.
Hope we can get a fix soon so we can enjoy the builds that involve the skill even in corridors and boss arenas with bugged layouts.
Furthermore, Dashing through some zones drops you below the levels - especially in the new woven echoes. And you get stuck underground.