I went through a nether portal as a wisp,got instakilled on entrance to the nether,by a full glowstone zombie.I pushed the zombie through the portal,got my grave,but every tinkers item except my rapier disappeared,including the max redstone gloves.When i got back from the nether,the zombie was not there,and i was at my old bases non functional,broken nether portal.When i /home d,no zombie was there,as the zombie might have taken my stuff and got removed because it was not loaded.Lost items:Max redstone glove,cobalt head paper binding manyullin rod pick and cobalt head and plate,manyulling plate and rod hammer had siappeared with max lapis and max redstone with moss.
I am meaning to report bugs,the items didnt go through the portal,and the zombie disappeared,and the portal was broken it put me through...
just tinkers tools? nothing else? also unfortunatly we operate a no refunds policy which you can find more about here Info - Refunds on lost items | MineYourMind Community
The items appear at spawn. Pushing things Nether -> Overworld results in it attempting to do this at spawn. However since you most likely don't have perms the items instant disappear.
If you go from the nether into the nether portal you will get teleported to the portal in the overworld which you used to get into the nether while items and mob still use the vanilla mechanic.