I think the consensus on this issue is it's caused when the object being stretched doesn't have a position saved. It may be visible but if the position isn't set it can happen. Try moving your buffs then move then back which will hopefully update their position settings.
click your 'addons' button before you log into the game and disable SPARK. If you didnt run the .bat file, simply remove SPARK folder in your Pitbull addon. Or you can also disable it ingame trough Pitbull options.