It looks like I am running version 12.6.1.284387 for Jabber on Android. I want to say the problem started during a patch/release around 2 months ago. If I open Jabber on my Samsung Note 9 any audio to include regular phone calls and things like Spotify becomes very tin sounding and it unusable. The only fix I have found so far is to restart my device and avoid using Jabber on mobile which I don't fell like is a good long term solution.
Is this a known issue with anyone else and is a fix being worked on?