"Rules of Nature" Challenge not working.

[OctoSaki8]

So, i'm a keen lover of Enforcer. It's a very polished mod, but lately I have been noticing a problem with one of the challenges. "Rules of Nature" Where you must shove Aurelionite off the Gilded coast using Enforcer's Shield bash secondary. I've done this several times, even several times in the same run. But each time, I never got the achievement completed. Any idea what's causing this?

Profile code for modpack: 0196cef0-ad2b-2a15-47c7-1a4994dcedc4