This issue is fairly old now, but I would really like to know if its acknowledged by Anet as it ruins the skill
Fact: Vengeful hammers will get destroyed by just about anything, from uneven terrain to small bumps on the road.. Leaving you with one, or even no hammers at all sometimes. All while the skill often keeps channeling with nothing but empty air swirling around you.. Can be rather hard to judge at times if you are just wasting the channel or not.
I love the skill, gives much needed aoe punch to the revenant. But seriously, hammers disappearing is making it unsuable in way too many areas and places. While other classes can drop down their aoes with impunity, while revenants are so terribly hampered by this buggy skill.
-PLEASE- remove terrain collision from the skill!