Hitting inanimate objects
If this is not regarded as a bug, than i think it may have the same codding as for gathering in reach resources: after 3 hits you need to start again the loop.
This has been aknowledged by the devs and is being reworked. Check the dungeon forums, Ascalon Catacombs and Twiligt Arbor have a serious problem with this.
Yeah, it might be a bug, but if it is, this is a suggestion to fix the bug.