can't barter in old worlds

I've been playing the beta for a while and ever since I started I haven't been able to barter with the piglins. I wear gold armor and make sure they are friendly with me. Then I throw the gold ingot at them but they just stand there and do nothing. They show no interest in the gold. What's really weird is that if I create a new world and try to barter in that world it works, but it never works in my old world. so I'm not sure what's going on but I would love it if this got fixed. I need me some crying obsidian!