Oil Slick Arrow bug

[bchase888]

The oil slick arrow power, when used with /bind powexec_location target, will sometimes shoot under the map or down to the 1st floor if I'm on the 2nd floor of a mission map.  It's more prone to happen in AE farming maps, or unique outdoor maps.  It happens in the final mission of the Penelope Yin TF in multiple areas including on the 2nd floor, and in the reactor room. 

One way to avoid this is to not use the powexec bind and to place oil slick manually whenever I'm on a problem map.