Host unable to hear voice chat

I’ve followed the steps at How can I make in game voice communication? - Audio - Unreal Engine Forums to get Steam voice chat working for my game but it seems that only the clients are able to hear the chat. The host gets nothing while everyone else gets everything, including their own voice.

What do I need to do to get the host to hear voices and make it so players can’t hear their own?

We recently created a packaged build to test something else and we discovered that in that build voice chat seems to work. Not sure why it doesn’t when we run standalone though.