Quest target trapped in cell preventing daily quest

BugID 3584661

While doing a daily quest for Catarina.

Need to click on corrupted corpse then take the risen minion (in this case a spider ) to the statue.

Unfortunately the corpse was spawned in a small cell directly behind Catarina

On clicking on it it reanimated but could not get out of the cell. With persistence it would occasionally appear to escape and follow but only for a short distance (half a screen or so) then it snapped back to its original position.

See attached screenshot