Bone, Ancient bone, and all the leathers can not be gathered at home. They must be gathered in towns and dungeons, bought in the shops, or found as loot in dungeons. There never has been an upgrade to gather leather or bones at the mansion. Some people have suggested that a Hunting upgrade should allow gathering basic leather and bones as well as meat.

The edit I mentioned above does fix the issue. You can also copy /src/character/ch_leveling.gd from 6.1a into 6.1b. That also fixes the issue, but I don't know if other changes were made to ch_leveling from 6.1a to 6.1b so other issues might arise.