Apparently there is some outdated code, its better explained in this tread by the Doggy Talents developer.
percivalalb/DoggyTalents#159

That's because ItemPhysicLite has the same modid as ItemPhysic. I highly recommend to use the Full version anyway. ItemPhysicLite can be used for vanilla servers etc. To be honest, I don't want to fix it because it would require some more work (hope you don't mind). If you really really need the Lite instead of the Full version let me know.

Well the only reason I wanted Lite was because it was client side only which sounds nice server performance wise and I only wanted the item physics part, not the floating items and lava burning physics ect.

I actually decided to just remove DoggyTalents in favor of the Lite version. So no worries.