I’m not sure why you would get the issue of items not unlocking after reinstalling, but there was definitely an issue with items not unlocking after loading a game (this is what I get for only testing in micro worlds 
). This was basically caused by the item listener that keeps track of the inventory to see if you get any recipe scrolls not being activated after loading a save. This has been fixed now. As for locked items becoming visible when searching, that is a bug with Stonehearth reported here.
I also noticed hearthlings sometimes getting stuck with the sacred altar, the collision box was a little too large so I have reduced it, hopefully that shouldn’t happen anymore.
Give the new version a try and if you still have issues with items not unlocking let me know.