Relocate: arthropod has 2-7 range and pulls the target 3 spaces instead of relocating to the closest available space. Is this a new version of the ability? It has a new 'green web' effect on the pulled target.
That sounds like the old 'pull arthropod' ability. They are probably using the old ability mistakenly linked to the new name. The new one should be standardised to work like the other relocates, range 5, which it is on the old client.