I have submitted the following bug but I have yet to see this fixed, much less listed on the known issues.
The artificer pet still floats 1 -2 meters above the surface after climbing up/down any ladders in any dungeon/raid and becomes bugged and does not function as it should.
The all of following occurs when this happens:
1. The pet will not attack any enemy target, it will run at the intended target, but will blankly stare and follow the target.
2. It will not use any of its enhancements (bluff, intimidate, trip, sunder, etc..) at intended enemy targets
3. Will not attempt to open any doors or pull levers when selected/activated by the player
4. Will not frequently follow you throughout dungeon when selected/activated by the player
5. Will not defend or follow other friendly targets when selected/activated by the player
6. Will hover over enemy target when it has been killed by any of the players in the party
7. Will not break boxes if the pet's enhancement line is intended to do so
Here is the idea i propose that might possibly fix this issue.
Use or base the pet's scripting on any of the hirelings that can be purchased at ingame vendor or DDO store.
I have noticed when the player goes up/down any ladders the hireling repeatedly ghost falls until the player has reached the new landing/surface after moving up/down any ladder. At this point the hireling then shortly appears/teleports to or near the player. (which the hireling continues to function as intended w/o error)
If this was to be done w/ the artificer pet, this would eliminate the whole broken pet/ladder issue. make it where the pet does not use the ladder, but simply teleports/warps to or near the player at the base or landing of the ladder.