Continuous mode not sending audio to server

[AndreVallestero]

Using continuous mode (or voice activity with thresholds set to minimum) shows that audio is being recorded (red lips on client) but no audio is received by the server. I can connect to the server fine on Android, Linux and Windows so it appears to be a problem with the IOS app. This is on the iPhone XS IOS 13.3.1 with Mumble 1.3.1. Internet connection is stable and problem persists regardless of quality mode (low, balanced, high) and TCP mode.

Server is Murmur 1.3.0 on default settings (Opus, 72kbps)