Unfortunately there's no workaround for this at the moment, but we are looking into a solution for this issue.
In the mean time you can try running the discord app in the background (local computer) and have your gaming friends join that.
There actually is a work around, you can use VBCable and Discord to get it working.
This helps: https://support.parsecgaming.com/hc/en-us/articles/360000961232
Very nice find. I will try it out.
Yea that's how I got my mic to work.