So it appears that the dialogue in this quest has been bugged for quite some time and this is not exclusive to the Green server or Project1999. Upon handing in 2x Bat fur and 2x fire Beetle leg he requests 4x infected rat liver which is part of a completely different quest altogether in Paineel.
But. Along with the dialogue being bugged. No experience or reward is generated as should be normally.
https://imgur.com/a/oQSVVpI
I have updated the wiki to reflect this bug.
https://wiki.project1999.com/Bat_Fur_and_Beetle_Legs