I’ve sent in a brief bug report through the game before regarding this issue, but thought I’d post details of it here so it can be seen/known.
Using the warriors leaping 1-handed sword attack (skill 2) over uneven ground in WvW as an enemy dies can leave your Bag of Loot stuck in the air, with no way to collect it. This happens when you use the skill from an elevated position and fall futher than you would normally.
While I like how the skill works, I’ve lost a few bags because of this.
All hail Emperor Anet, and their new clothes!